Posts Tagged ‘version’

Install specific zabbix-agent version / Downgrade Zabbix Agent client to exact preferred old RPM version on CentOS / Fedora / RHEL Linux from repo

Wednesday, June 7th, 2023

zabbix-update-downgrade-on-centos-rhel-fedora-and-other-rpm-based-linux-zabbix-logo

 

In below article, I'll give you the short Update zabbix procedure to specific version release, if you need to have it running in tandem with rest of zabbix infra, as well as expain shortly how to downgrade zabbix version to a specific release number
to match your central zabbix-serveror central zabbix proxies.

The article is based on personal experience how to install / downgrade the specific zabbuix-agent  release on RPM based distros.
I know this is pretty trivial stuff but still, hope this might be useful to some sysadmin out there thus I decided to quickly blog it.

 

1. Prepare backup of zabbix_agentd.conf
 

cp -rpf /etc/zabbix/zabbix_agentd.conf /home/your-user/zabbix_agentd.conf.bak.$(date +"%b-%d-%Y")

 

2. Create zabbix repo source file in yum.repos.d directory

cd /etc/yum.repos.d/
vim zabbix.repo 

 

[zabbix-5.0]

name=Zabbix 5.0 repo

baseurl=http://zabixx-rpm-mirrors-site.com/centos/external/zabbix-5.0/8/x86_64/

enabled=1

gpgcheck=0

 

3. Update zabbix-agent to a specific defined version

yum search zabbix-agent –enablerepo zabbix-5.0

To update zabbix-agent for RHEL 7.*

# yum install zabbix-agent-5.0.34-1.el7.x86_64


For RHEL 8.*

# yum install zabbix-agent-5.0.34-1.el8.x86_64


4. Restart zabbix-agentd and check its status to make sure it works correctly
 

systemctl status zabbix-agentd
systemctl restart zabbix-agentd
# systemctl status zabbix-agentd


Go to zabbix-server WEB GUI interface and check that data is delivered as normally in Latest Data for the host fom recent time, to make sure host monitoring is continuing flawlessly as before change.

NB !: If yum use something like versionlock is enabled remove the versionlock for package and update then, otherwise it will (weirldly look) look like the package is missing.
I'm saying that because I've hit this issue and was wondering why i cannot install the zabbix-agent even though the version is listed, available and downloadable from the repository.


5. Downgrade agent-client to specific version (Install old version of Zabbix from Repo)
 

Sometimes by mistake you might have raised the Zabbix-agent version to be higher release than the zabbix-server's version and thus breach out the Zabbix documentation official recommendation to keep
up the zabbix-proxy, zabbix-server and zabbix-agent at the exactly same version major and minor version releases. 

If so, then you would want to decrease / downgrade the version, to match your Zabbix overall infrastructure exact version for each of Zabbix server -> Zabbix Proxy server -> Agent clients.

To downgrade the version, I prefer to create some backups, just in case for all /etc/zabbix/ configurations and userparameter scripts (from experience this is useful as sometimes some RPM binary update packages might cause /etc/zabbix/zabbix_agentd.conf file to get overwritten. To prevent from restoring zabbix_agentd.conf from your most recent backup hence, I prefer to just crease the zabbix config backups manually.
 

# cd /root

# mkdir -p /root/backup/zabbix-agent 

# tar -czvf zabbix_agent.tar.gz /etc/zabbix/

# tar -xzvf zabbix_agent.tar.gz 


Then list the available installable zabbix-agent versions
 

[root@sysadminshelp:~]# yum –showduplicates list zabbix-agent
Заредени плъгини: fastestmirror
Determining fastest mirrors
 * base: centos.uni-sofia.bg
 * epel: fedora.ipacct.com
 * extras: centos.uni-sofia.bg
 * remi: mirrors.uni-ruse.bg
 * remi-php74: mirrors.uni-ruse.bg
 * remi-safe: mirrors.uni-ruse.bg
 * updates: centos.uni-sofia.bg
Инсталирани пакети
zabbix-agent.x86_64                                                     5.0.30-1.el7                                                     @zabbix
Налични пакети
zabbix-agent.x86_64                                                     5.0.0-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.1-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.2-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.3-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.4-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.5-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.6-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.7-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.8-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.9-1.el7                                                      zabbix
zabbix-agent.x86_64                                                     5.0.10-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.11-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.12-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.13-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.14-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.15-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.16-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.17-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.18-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.19-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.20-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.21-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.22-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.23-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.24-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.25-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.26-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.27-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.28-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.29-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.30-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.31-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.32-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.33-1.el7                                                     zabbix
zabbix-agent.x86_64                                                     5.0.34-1.el7                                                     zabbix

 

Next lets install the most recent zabbix-versoin from the CentOS repo, which for me as of time of writting this article is 5.0.34.

# yum downgrade -y zabbix-agent-5.0.34-1.el7

# cp -rpf /root/backup/zabbix-agent/etc/zabbix/zabbix_agentd.conf /etc/zabbix/

# systemctl start zabbix-agent.service

# systemctl enable  zabbix-agent.service
 

# zabbix_agentd -V
zabbix_agentd (daemon) (Zabbix) 5.0.30
Revision 2c96c38fb4b 28 November 2022, compilation time: Nov 28 2022 11:27:43

Copyright (C) 2022 Zabbix SIA
License GPLv2+: GNU GPL version 2 or later <https://www.gnu.org/licenses/>.
This is free software: you are free to change and redistribute it according to
the license. There is NO WARRANTY, to the extent permitted by law.

This product includes software developed by the OpenSSL Project
for use in the OpenSSL Toolkit (http://www.openssl.org/).

Compiled with OpenSSL 1.0.1e-fips 11 Feb 2013
Running with OpenSSL 1.0.1e-fips 11 Feb 2013

 

That's all folks you should be at your custom selected preferred version of zabbix-agent.
Enjoy ! 🙂

How to check Microsoft IIS webserver version

Monday, July 21st, 2014

If you have to tune some weirdly behaviour Microsoft IIS (Internet Information Services) webserver, the first thing to do is to collect information about the system you're dealing with – get version of installed Windows and check what kind of IIS version is running on the Windows server?

To get the version of installed Windows on the system you just logged in, the quickest way I use is:
 

Start -> My Computer (right mouse button) Properties

check-windows-server-version-screenshot-windows-2003-r2

Run regedit from cmd.exe and go and check value of registry value:

 

HKEY_LOCAL_MACHINE\SOFTWARE\MicrosoftInetStp\VersionString


check-iis-webserver-version-with-windows-registry-screenshot

As you can see in screenshot in this particular case it is IIS version 6.0.

An alternative way to check the IIS version in some cases (if IIS version return is not disabled) is to telnet to webserver:

telnet your-webserver 80
 


Once connected Send:

HEAD / HTTP/1.0


Also on some Windows versions it is possible to check IIS webserver version from Internet Information Services Management Cosnole:

To check IIS version from IIS Manager:

Start (button) -> Control Panel -> Administrative Tools -> "Internet Information Services" IIS Manager

From IIS Manager go to:

Help -> About Microsoft Management Console


Here is a list with most common IIS version output you will get depending on the version of Windows server:

 

Windows NT 3.51 1.0
Windows NT 4 2.0-4.0
Windows Server 2000 5.0
Windows XP Professional 5.1
Windows Server 2003 6.0
Windows Vista 7.0
Windows Server 2008 7.0
Windows Server 2008 R2 7.5
Windows 7 7.5
Windows Server 2012 8.0
Windows 8 8.0
Windows Server 2012 R2 8.5
Windows 8.1 8.5

If you have only an upload FTP access to a Folder served by IIS Webserver – i.e. no access to the Win server running IIS, you can also grasp the IIS version with following .ASP code:
 

<%
response.write(Request.ServerVariables("SERVER_SOFTWARE"))
%>


Save the file as anyfile.asp somewhere in IIS docroot and invoke it in browser.

How to check if shared library is loaded in AIX OS – Fix missing libreadline.so.7

Thursday, February 20th, 2020

ibm-aix-logo1

I've had to find out whether an externally Linux library is installed  on AIX system and whether something is not using it.
The returned errors was like so:

 

# gpg –export -a

Could not load program gpg:
Dependent module /opt/custom/lib/libreadline.a(libreadline.so.7) could not be loaded.
Member libreadline.so.7 is not found in archive


After a bit of investigation, I found that gpg was failing cause it linked to older version of libreadline.so.6, the workaround was to just substitute the newer version of libreadline.so.7 over the original installed one.

Thus I had a plan to first find out whether this libreadline.a is loaded and recognized by AIX UNIX first and second find out whether some of the running processes is not using that library.
I've come across this interesting IBM official documenation that describes pretty good insights on how to determine whether a shared library  is currently loaded on the system. which mentions the genkld command that is doing
exactly what I needed.

In short:
genkld – creates a list that is printed to the console that shows all loaded shared libraries

genkld-screenshot-aix-unix

Next I used lsof (list open files) command to check whether there is in real time opened libraries by any of the running programs on the system.

After not finding anything and was sure the library is neither loaded as a system library in AIX nor it is used by any of the currently running AIX processes, I was sure I could proceed to safely overwrite libreadline.a (libreadline.so.6) with libreadline.a with (libreadline.so.7).

The result of that is again a normally running gpg as ldd command shows the binary is again normally linked to its dependend system libraries.
 

aix# ldd /usr/bin/gpg
/usr/bin/gpg needs:
         /usr/lib/threads/libc.a(shr.o)
         /usr/lib/libpthreads.a(shr_comm.o)
         /usr/lib/libpthreads.a(shr_xpg5.o)
         /opt/freeware/lib/libintl.a(libintl.so.1)
         /opt/freeware/lib/libreadline.a(libreadline.so.7)
         /opt/freeware/lib/libiconv.a(libiconv.so.2)
         /opt/freeware/lib/libz.a(libz.so.1)
         /opt/freeware/lib/libbz2.a(libbz2.so.1)
         /unix
         /usr/lib/libcrypt.a(shr.o)
         /opt/freeware/lib/libiconv.a(shr4.o)
         /usr/lib/libcurses.a(shr42.o)

 

 

# gpg –version
gpg (GnuPG) 1.4.22
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

 

Home: ~/.gnupg
Supported algorithms:
Pubkey: RSA, RSA-E, RSA-S, ELG-E, DSA
Cipher: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
        CAMELLIA128, CAMELLIA192, CAMELLIA256
Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
Compression: Uncompressed, ZIP, ZLIB, BZIP2

 

 

Getting Console and Graphical hardware system information on Linux with cpuinfo, neofetch, CPU-X (CPU-Z Unix alternative), I-nex and inxi

Tuesday, September 17th, 2019

getting-console-information-and-graphical-hardware-system-information-Linux-cpuinfo-neofetch-cpu-x-i-nex-1

Earlier I've wrote extensive article on how to get hardware information on Linux using tools such as dmidecode, hardinfo, lshw, hwinfo, x86info and biosdecode but there are few other hardware reporting tools for Linux worthy to mention that has been there for historical reasons such as cpuinfo as we as some new shiny ones such as neofetch (a terminal / console hardware report tool as well the CPU-X and I-Nex  which is Linux equivalent to the all known almost standard for Windows hardware detection CPU-Z worthy to say few words about.
 

1. cpuinfo

 

Perhaps the most basic tool to give you a brief information about your Processor type (model) number of Cores and Logical Processors is cpuinfo

I remember cpuinfo has been there since the very beginning on almost all Linux distributions's repository, nowadays its popularity of the days when the kings on the Linux OS server scenes were Slackware, Caldera OpenLinux and Redhat 6.0 Linux and Debian 3.0  declined but still for scripting purposes it is handy small proggie.

To install and run it in Debian  / Ubuntu / Mint Linux etc.:

 

aptitude install -y cpuinfo

/usr/bin/cpu-info

 

Linux-get-processor-system-info-in-console-cpu-info

 

2. neofetch

 

The next one worthy to install and check is neofetch (a cross-platform and easy-to-use system information
 command line script that collects your Linux system information and display it on the terminal next to an image, it could be your distributions logo or any ascii art of your choice.)

The cool thing about neofetch is besides being able to identify the System server / desktop hardware parameters, it gives some basic info about number of packages installed on the system, memory free and in use, used kernel and exact type of System (be it Dell PowerEdge Model XX, IBM eSeries Model / HP Proliant Model etc.

neofetch-OS-hardware-information-Linux-ascii-system-info-desktop-notebook

neofetch info generated on my home used Lenovo Thikpad T420

neofetch-OS-hardware-information-Linux-ascii-system-info-pcfreak-home-server
neofetch info from www.pc-freak.net running current machine

neofetch even supports Mac OS X and Windows OS ! 🙂

To install neofetch on Mac OS X:
 

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"


or via Mac ported packages using brew

brew install neofetch


neofetch-screenshot-from-Mac-OS-X

neofetch is even installable on Windows OS that has the scoop command line installer tool installer manager with below PowerShell code in cmd.exe (Command line):

powershell Set-ExecutionPolicy RemoteSigned -scope CurrentUser
iex (new-object net.webclient).downloadstring('https://get.scoop.sh')
scoop install git
scoop install neofetch

neofetch-microsoft-windows-hardware-command-line-report-tool-screenshot


By the way Scoop was quite a finding for me and it is pretty handy to install plenty of useful command line Linux / UNIX tools, such as curl, wget, git etc. in the same easy straight forward way as a standard yum or apt-get on Windows (without explicitly installing things as GnuWin and CygWin).
 

3. CPU-X graphical user interface hardware report Linux GUI alternative to Windows CPU-Z


The packages for CPU-X are a bit outdated and even though there are rpm packages for Fedora, OpenSuSE and .deb package for Debian for Debian, Ubuntu and ArchLinux (pacman), there is no up to date version for Debian 10 and the package builds distributed for different Linux distros are a bit outdated.

Thus to install CPU-X on any Linux distribution it is perhaps best to use the portable version (static binary) of CPU-X.
It is currently available on https://github.com/X0rg/CPU-X/releases

To install latest portable version of CPU-X

wget https://github.com/X0rg/CPU-X/releases/download/v3.2.4/CPU-X_v3.2.4_portable.tar.gz

mkdir CPU-X
cd CPU-X

tar -zxvvf CPU-X_v3.2.4_portable.tar.gz
-rwxr-xr-x yohan/users 4563032 2019-01-13 22:15 CPU-X_v3.2.4_portable.bsd64
-rwxr-xr-x yohan/users 5484968 2019-01-13 22:15 CPU-X_v3.2.4_portable.linux64

 

cp -rpf CPU-X_v3.2.4_portable.linux64 /usr/local/bin/
ln -sf /usr/local/bin/CPU-X_v3.2.4_portable.linux64 /usr/local/bin/cpu-x


Next run as superuser (root)
 

hipo@jeremiah:~$ su -c 'cpu-x'

 

As seen from below screenshots cpu-x reports a lot of concrete specific hardware data on:

  • Processor
  • Motherboard
  • Memory
  • System
  • Graphic card
  • Performance

cpu-x-cpu-cpu-z-alternative-linux-screenshot-CPU-info

cpu-x-cpu-cpu-z-alternative-linux-screenshot-caches-info

cpu-x-cpu-cpu-z-alternative-linux-screenshot-Motherboard-info

cpu-x-cpu-cpu-z-alternative-linux-screenshot-memory-info

cpu-x-cpu-cpu-z-alternative-linux-screenshot-system-info

cpu-x-cpu-cpu-z-alternative-linux-screenshot-graphics-info

CPU-X can be installed also on FreeBSD very easily by just installing from BSD port tree sysutils/cpu-x/
It is also said to work on other *BSDs, NetBSD, OpenBSD Unixes but I guess this will require a manual compilation based on FreeBSD's port Makefile.

4. I-Nex another GUI alternative to CPU-Z for UNIX / Linux

I-Nex is even more useful for general hardware reporting as it reports many hardware specifications not reported by CPU-X such as Battery type and Model Name  (if the hardware report is on a laptop), info on USB devices slots or plugged USB devices brand and specifications, the available Network devices on the system (MAC Addresses) of each of it, Installed and used drivers on Hard Disk (ATA / SATA / SCSI / SSD), HW Sector size, Logical Block size, HDD Sectors count and other specific Hard Drive data as well as information on available Audio (Sound Blaster) devices (HDA-Intel), used Codecs, loaded kernel ALSA driver, Video card used and most importantly indicators on Processor reported CPU (temperature).

 

To install I-nex

Go to https://launchpad.net/i-nex or any of the mirror links where it resides and install the respective package, in my case, I was doing the installation on Debian Linux, so fetched current latest amd64 package which as of moment of writting this article is i-nex_7.6.0-0-bzr977-20161012-ubuntu16.10.1_amd64.deb , next installed it with dpkg
 

dpkg -i i-nex_7.6.0-0-bzr977-20161012-ubuntu16.10.1_amd64.deb

 

As the package was depending on some other .deb packages, which failed to install to install the missing ones I had to further run
 

apt –fix-broken install

i-nex-cpu-info-linux-hardware-info-program

 

hre

I-Nex thermal indicators about CPU temperature on a Linux Desktop notebook

i-nex-gpu-info-linux-hardware-info-program

i-nex-mobo-info-linux-hardware-info-program

i-nex-audio-info-linux-hardware-info-program

i-nex-drivers-info-linux-hardware-info-program

i-nex-system-info-linux-hardware-info-program

i-nex-battery-info-linux-hardware-info-program

 

There are other Hardware identification report tools such as CUDA-Z that are useful to check if you have Nvidia Video Card hardware Installed on the PC to check the status of CUDA enabled GPUs, useful if working with nVidia Geforce, Quadro, Tesla cards and ION chipsets.

If you use it however be aware that CUDA-Z is not compatible with 3rd-party linux drivers for NVidia so make sure you have the current official Nvidia version.

 

5. Inxi full featured system information script

 

Inxi is a 10000 lines mega bash script that fetches hardware details from multiple different sources in /proc /sys and from commands on the system, and generates a beautiful looking console report that non technical users can read easily.

inxi-10-k-mega-bash-shell-script-reporting-on-installed-system-computer-hardware

 

inxi -Fx

 

 

inxi-report-on-installed-hardware-on-my-lenovo-thinkpad-home-laptop

Each of the pointed above tools has different method of collection of Hardware information from various resources e.g. – kernel loaded modules, dmesg, files like /proc/meminfo /proc/version /proc/scsi/scsi /proc/partitions.
Hence some of the tools are likely to report more info than otheres, so in case if some information you need regarding the system plugged in hardware is missing you can perhaps obtain it from another program. Most Linux distribution desktop provided GNOME package are including Hardinfo gui tool, but in many cases above mentioned tools are likely to add even more on info on what is inside your PC Box.
If you're aware of others tools that are useful not mentioned here please share it.

How to enable Gravis UltraSound in DOSBox for enhanced music experience in DOS programs and Games

Tuesday, October 31st, 2017

DOSBox

Gravis UltraSound Classic

 

Gravis UltraSound

Gravis UltraSound or GUS is a sound card for the IBM PC compatible systems.
It was lunched in 1992 and is notable for it's ability to use real-world sound recordings (wavetable) of a musical instruments rather than artificial computer-generated waveforms.
As one of my friends used to say back then: "it sounds like a CD".

To enable GUS in DOSBox all you need to do is:

1. Download the archive with the GUS files from https://alex.www.pc-freak.net/files/GUS/ULTRASND.zip. Extract the archive (there is already a directory in it so you don't have to create one) preferably where you keep your DOSBox stuff (like Games).

2. Find your DOSBox config file. Depending on the version or host OS, the dosbox conf file is located either inside the user profile folder or inside the same folder as dosbox.exe. In Windows 7 the config file is located at

"C:\Users\Fred\AppData\Local\VirtualStore\Program Files (x86)\dosbox.conf"

where "Fred" is your username.

In GNU/Linux it's in "/home/Fred/.dosbox/dosbox.conf" where "Fred" is your username.

The name of the conf file may also have dosbox version (for example –

"dosbox-0.74.conf").

Open it with a text editor like notepad (Windows) or equvalent for GNU/Linux (vi, Kate, gedit…). Locate "[gus]" section (without the quotes) and edit it so it looks like this:

[gus]
#      gus: Enable the Gravis Ultrasound emulation.
#  gusrate: Sample rate of Ultrasound emulation.
#           Possible values: 44100, 48000, 32000, 22050, 16000, 11025, 8000, 49716.
#  gusbase: The IO base address of the Gravis Ultrasound.
#           Possible values: 240, 220, 260, 280, 2a0, 2c0, 2e0, 300.
#   gusirq: The IRQ number of the Gravis Ultrasound.
#           Possible values: 5, 3, 7, 9, 10, 11, 12.
#   gusdma: The DMA channel of the Gravis Ultrasound.
#           Possible values: 3, 0, 1, 5, 6, 7.
# ultradir: Path to Ultrasound directory. In this directory
#           there should be a MIDI directory that contains
#           the patch files for GUS playback. Patch sets used
#           with Timidity should work fine.

gus=true
gusrate=44100
gusbase=240
gusirq=5
gusdma=3
ultradir=C:\ULTRASND

Then save the dosbox conf file.

3. Start DOSBox and mount "ULTRASND" directory to "C:".

You can do that with

mount c (directory to ULTRASND)

For example if you have extracted the archive in "C:\Games" it has created "C:\Games\ULTRASND" and the command you will have to write in DOSBox is

mount c c:\Games

(example: if your game is in "C:\Games\Heroes2" and your GUS directory is "C:\Games\ULTRSND" (if you have extracted the archive "C:\Games\") then you "mount c c:\Games" and you are set)

or for GNU/Linux if you have extracted the archive in "/home/Fred/Games" it has created "/home/Fred/Games/ULTRASND" and the command you will have to write in DOSBox is

mount c /home/Fred/Games (where "Fred" is your user name).

(example: if your game is in "/home/Fred/Games/Heroes2" and your GUS directory is "/home/Fred/Games/ULTRSND" (if you have extracted the archive" /home/Fred/Games/") in  then you "mount c /home/Fred/Games" and you are set)

You can make this automatic so you don't have to write it everytime by adding this command in the end (bottom) part of your dosbox conf file and save it.

You're practicly ready. All you need to do now is set Gravis UltraSound in your game or application setup (for example with the file "setup.exe") with IO: 240, IRQ 5 and DMA 3. If you prefer you previous sound card you can do that by selecting it again from the setup without disabling GUS from the dosbox conf file.

Happy listening!

Gravis Ultrasound

 

Article written by Alex

How to connect to WiFi network using console or terminal on GNU / Linux

Wednesday, November 2nd, 2011

iwlist-screenshot-howto-connect-to-wifi-in-text-console-linux-wpasupplicant

Sometimes its useful to connect to Wireless Networks using console . The reasons for that might be many, one possible reason is to be able to debug, Wireless connection failures or simply omit the use of the many available GUI wifi connection programs.

As a first step before connecting in terminal is to look up for the wifi networks available for connection, this is done with cmd:

linux:~# iwlist wlan0 scanning
wlan0 Scan completed :
Cell 01 - Address: 00:24:01:90:8F:38
Channel:7
Frequency:2.442 GHz (Channel 7)
Quality=70/70 Signal level=-39 dBm
Encryption key:on
ESSID:"magdanoz"
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 48 Mb/s; 18 Mb/s
24 Mb/s; 36 Mb/s; 54 Mb/s
Mode:Master
Extra:tsf=000000034f5c786b
Extra: Last beacon: 68ms ago
IE: Unknown: 00086D616764616E6F7A
IE: Unknown: 010482848B96
IE: Unknown: 030107
IE: Unknown: 32080C1218602430486C
IE: Unknown: CC0700CC020000018A
IE: Unknown: CC0700CC0300000100
IE: WPA Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
IE: IEEE 802.11i/WPA2 Version 1
Group Cipher : TKIP
Pairwise Ciphers (2) : TKIP CCMP
Authentication Suites (1) : PSK
Cell 02 - Address: 00:1E:2A:60:5E:DC
Channel:1
...

To just list the ESSID s of the wifi networks:

linux:~# iwlist wlan0 scanning|grep -i 'essid'
ESSID:"magdanoz"
ESSID:"default"
ESSID:"todorov"
ESSID:"BTC-ADSL"
ESSID:"Zahari"
ESSID:"Drago"

1. Connecting to Open Wireless Network

Now from the above output it is clear 6 wifi networks are available for connection. The default wifi network from the list is an Open network (e.g. without pass). To connect to it I use cmd:

linux:~# /sbin/iwconfig wlan0 essid 'default'
linux:~# /sbin/iwconfig wlan0 key open

After connected to configure IP, Gateway and DNS from a DHCP server running on the WIFI router, dhclient cmd is used:

linux:~# /sbin/dhclient wlan0

2. Connecting to WEP 64bit / 128bit encrypted network

linux:~# /sbin/iwconfig wlan0 key 1234-5678-9101-1213

3. Connecting to WPA / WPA2 encrypted wifi network

To connect to WPA or WPA2 encrypted network its necessery to have installed wpasupplicant package. The name of the package might vary in different distributions on Debian and Ubuntu, the name of the package is wpasupplicant, on Fedora, CentOS and RHEL the package that has to be in is wpa_supplicant :
After having installed the wpa_supplicant to connect to the network with ESSID name magdanoz , wpa_passphrase is used first:

linux:~# /usr/bin/wpa_passphrase magdanoz Secret_Wifi_Password | tee -a /etc/wpa_supplicant.conf
network={
ssid="magdanoz"
#psk="Secret_Wifi_Password"
psk=6f7590250c4496ff7bf8dd25199ac3bb5a614d4bc069975aa884bcf084da73bc
}

As you see in above command the secret password key is generated printed on the screen and then added to /etc/wpa_supplicant.conf , necessery to establish the wireless connection with wpa_supplicant with cmd:

linux:~# /sbin/wpa_supplicant wpa_supplicant -d wext -i wlan0 -c /etc/wpa_supplicant.conf -B

-d wext instructs wpa_supplicant to use (Linux wireless extension driver).
-B tells wpa_supplicant to background the connection to prevent the wireless connection to drop off, if the console / terminal from which it is launched gets closed.

In case of succesful connection with wpa_supplicant , once again IP, Gateway and DNS is configured fetching the settings from the wifi hotspot dhcp server:

linux:~# /sbin/dhclient wlan0

General information about the wireless network and info related to the established connection can be obtained with /usr/bin/iwconfig :

linux:~# /sbin/iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11abg ESSID:"magdanoz"
Mode:Managed Frequency:2.442 GHz Access Point: 00:24:00:90:8F:38
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=70/70 Signal level=-39 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0

To configure the exact channel over which the wireless connection will be established again is done with iwconfig, for instance to configure wlan0 wifi connection established to be on wifi channel 7:

linux:~# /sbin/iwconfig wlan0 channel 11

By default iwconfig is set to automatically set the channel based on connected network ESSID , if the channel is modified to some specific number to revert it back use:

linux:~# /sbin/iwconfig wlan0 channel auto
 

Fix dosbox – setting: cycles=auto. If the game runs too fast try a fixed cycles amount in DOSBox’s options. Exit to error: DRC64:Unhandled memory reference

Thursday, October 12th, 2017

fix-dosbox-error-setting-cycles-auto-game-runs-too-fast-exit-err-drc64-unhandled-memory-reference

I've recently installed Debian GNU / Linux 9.1 Stretch and on Ubuntu 16.10 Yakkety Yak and as an old school true gamer addict decided to play some games to recall the good old memories from the past of the glorious DOS games times, when all was simple people was real and there was no terrible people dividers such as Facebook  / GooglePlus, no skype fuzzy craziness and no people watching all time at their mobile smart phones like zoombies .

Well anyways, so I wanted to play my favourite DOS games Terminal Velocity, StarGunner, Raptor, Heroes of Might and Magic 2, Doom II, Duke 3d etc. etc. the list goes on and on – BTW What's your favourite old school DOS Game??

So I issues in Terminal:

$ dosbox TV.EXE

DOSBox version 0.74
Copyright 2002-2010 DOSBox Team, published under GNU GPL.

CONFIG:Loading primary settings from config file /home/zetathon/.dosbox/dosbox-0.74.conf
MIXER:Got different values from SDL: freq 44100, blocksize 512
ALSA:Can't subscribe to MIDI port (65:0) nor (17:0)
MIDI:Opened device:none
DOSBox switched to max cycles, because of the setting: cycles=auto. If    the game runs too fast try a fixed cycles amount in DOSBox's options.
Exit to error: DRC64:Unhandled memory reference

 

So what is the solution to  Exit to error: DRC64:Unhandled memory reference
error and why it happens?

Well, as the error clearly states the whole problem
comes from a default dosbox dos emulator configuration, that's the
setting:
 

cycles=auto


Perhaps the CPU beat of a Core I7 CPUs is too strong for some of the old games which are expecting a slower PC with less memory that's why the exception

Exit to Error: DRC64:Unhandled memory reference
is spit out by Dosemu.

So how to solve DRC64:Unhandled memory reference dosemu error?

By default DOSBOX places its configuration at  Linux / BSD / *nix-es at home folder /dosbox – e.g. ~/.dosbox/ the naming of dosbox.conf might differ according to dosbox version and the respective Linux / BSD distro, on Debian and Ubuntu Linux usually the naming includes a version number.

On Debian 9 Strecth Linux dosbox config is at ~/.dosbox/dosbox-0.74.conf

Edit the file
 

$ vim ~/.dosbox/dosbox-0.74.conf


and change inside the value for:

 

 

 

core=auto

to

core=normal

Then give dosbox with the erroring game another try, it worked for me
for me and everything seemed to run fine.

I've only run a handful of games but so far it seems to be working well.

If it does work but performance is degraded and tooks a huch hit on Gameplay you better try to substitute
 

core=normal

to
 

core=simple


AND HOORAY IT WORKS AGAIN! THE GAME RUN SUCCESSFULLY JOY TO THE WORLD! 🙂

Graphic tool to get Hardware Information on Linux / How to view Hardware Information easy in Linux

Tuesday, October 3rd, 2017

 

 

howto-get-graphically-system-hardware-info-linux-gui-program-for-hardware-recognition-linu

 

IS THERE A GRAPHIC ( GUI ) TOOL TO VIEW HARDWARE INFORMATION ON LINUX?

 


If you are a console maniac like myself, perhaps you never think that you might need anything graphical besides to view hardware information on Linux, but as we're growing older sometimes it becomes much less easier to just use a graphical tool that can show us all the information we need regarding a Notebook / Desktop PC with Linux or even Server machine with enabled Graphical Environment with a brand new installed GNU / Linux whatever version (I hope you don't own server with running Xorg / Gnome / Mate / Xfce etc. as that's pretty much a waste of hardware resource and opens a dozen of other security risks for the server running services ).

 

 

 There are at least 2 ways to quickly check hardware on both PC WorkStation or Server, the easiest and quickest for PC / Notebook Linux users if you have installed GTK libraries or Gnome Desktop Environment is with;
 

LSHW-GTK


LSHW-GTK is simply a GTK frontend over the command line tool for hardware information gathering LSHW
 

HardiInfo

 

HardInfo – is a small application that displays information about your hardware and operating system. Currently it knows about PCI, ISA PnP, USB, IDE, SCSI, Serial and parallel port devices.


1. Howto Install LSHW-GTK / HardInfo on Debian / Ubuntu / Mint GNU / Linux to easy view hardware information


To install both of them on Debian / Ubuntu GNU / Linux, run:
 

apt-get install –yes lshw lshw-gtk hardinfo

 

2. Howto install LSHW-GTK on Fedora, CentOS and OpenSuSE Linux to view easy hardware information

On RedHat RPM based Linux distributions, the package to install is called lshw-gui

Install with yum RPM package manager:
 

yum install –yes lshw lshw-gui  hardinfo


3. Run lshw-gtk / hardinfo

Again, find them and run from GUI environment menus or run manually like in below example:

$ lshw-gtk


graphic-program-to-view-computer-hardware-on-linux-lshw-gtk-on-debian-linux-screenshot-view-hardware-easy-linux1

 

$ hardinfo


hardinfo-a-gui-program-to-view-computer-hardware-info-on-linux-and-freebsd

As you see hardinfo is really interactive and it gives you pretty much all the information, you might need, the only information that was missing at my case and I guess, that would happen to others is information about the SSD Hard Disk, which   180GB

HardInfo is really amazing program as it even includes various common Benchmark Tests and comparison with other Computers:

hardinfo-get-hardware-information-easily-on-linux-and-freebsd-benchmark-info-screenshot-debian-stretch

True that the tests, are pretty simple but still could be useful.

Now run it either from GNOME / Cinnamon (The default graphical environment of Debian Linux) or PLASMA (The new name for the second most popular Linux Graphical Environment – KDE desktop environment)

 

$ lshw


Here is few more screenshots from hardware info reported from my ThinkPad T410 Laptop Running Debian 9 Stretch at the moment.

 

MotherBoard -> BIOS Information

(thatnks God this old but gold Thinkpad T420 business notebook does not run UEFI substitute for BIOS 🙂

graphic-program-to-view-computer-hardware-on-linux-lshw-gtk-on-debian-linux-screenshot-view-hardware-easy-linux2

CPU Information (with all the supported CPU capabilities (extensions)

graphic-program-to-view-computer-hardware-on-linux-lshw-gtk-on-debian-linux-screenshot-view-hardware-easy-linux3

Host Bridge Info

graphic-program-to-view-computer-hardware-on-linux-lshw-gtk-on-debian-linux-screenshot-view-hardware-easy-linux4

Thinkpad BATTERY (45N1005) Info

graphic-program-to-view-computer-hardware-on-linux-lshw-gtk-on-debian-linux-screenshot-view-hardware-easy-linux5

By the way another Way to GUI View your Computer is to just generate HTML from lshw command line tool (as it supports export to HTML), here is how:

 

$ lshw -html > ~/hardware-specs.html


Then just open it with Browser, for example I like GNOME Epiphany browser, so I'll read HTML with it:

 

$ epiphany ~/hardware-specs.html


graphical-software-to-view-hardware-on-linux-lshw-command-to-generate-html-and-view-it-graphically-in-browser-on-home-pc-or-server


The great thing about generating HTML report for hardware is that on Staging / Production / Development servers which you inherited from some other administrator who for some reason (laziness 🙂 ) didn't left necessery documentation, you can easily map the machine hardware and even if it is a group of machines, you can automate report generation for all of them write a short script that parses the data on each of the HTML reports and finally creates a merged document with main important information about hardware of a cluster of computers etc.

If you still want to stick to console run the console version of lshw or use dmidecode or lshw:

 

$ lshw

hipo@jericho:~$ lshw
WARNING: you should run this program as super-user.
jericho                     
    description: Computer
    width: 64 bits
    capabilities: smp vsyscall32
  *-core
       description: Motherboard
       physical id: 0
     *-memory
          description: System memory
          physical id: 0
          size: 7870MiB
     *-cpu
          product: Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz
          vendor: Intel Corp.
          physical id: 1
          bus info: cpu@0
          size: 891MHz
          capacity: 3500MHz
          width: 64 bits
          capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm epb tpr_shadow vnmi flexpriority ept vpid xsaveopt dtherm ida arat pln pts cpufreq
     *-pci
          description: Host bridge
          product: 2nd Generation Core Processor Family DRAM Controller
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 09
          width: 32 bits
          clock: 33MHz
        *-pci:0
             description: PCI bridge
             product: Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port
             vendor: Intel Corporation
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 09
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:24 ioport:5000(size=4096) memory:f0000000-f10fffff ioport:c0000000(size=301989888)
           *-generic UNCLAIMED
                description: Unassigned class
                product: Illegal Vendor ID
                vendor: Illegal Vendor ID
                physical id: 0
                bus info: pci@0000:01:00.0
                version: ff
                width: 32 bits
                clock: 66MHz
                capabilities: bus_master vga_palette cap_list
                configuration: latency=255 maxlatency=255 mingnt=255
                resources: memory:f0000000-f0ffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:5000(size=128) memory:f1000000-f107ffff
        *-display
             description: VGA compatible controller
             product: 2nd Generation Core Processor Family Integrated Graphics Controller
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 09
             width: 64 bits
             clock: 33MHz
             capabilities: vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:30 memory:f1400000-f17fffff memory:e0000000-efffffff ioport:6000(size=64) memory:c0000-dffff
        *-communication:0
             description: Communication controller
             product: 6 Series/C200 Series Chipset Family MEI Controller #1
             vendor: Intel Corporation
             physical id: 16
             bus info: pci@0000:00:16.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: bus_master cap_list
             configuration: driver=mei_me latency=0
             resources: irq:27 memory:f3925000-f392500f
        *-communication:1
             description: Serial controller
             product: 6 Series/C200 Series Chipset Family KT Controller
             vendor: Intel Corporation
             physical id: 16.3
             bus info: pci@0000:00:16.3
             version: 04
             width: 32 bits
             clock: 66MHz
             capabilities: 16550 bus_master cap_list
             configuration: driver=serial latency=0
             resources: irq:19 ioport:60b0(size=8) memory:f392c000-f392cfff
        *-network
             description: Ethernet interface
             product: 82579LM Gigabit Network Connection
             vendor: Intel Corporation
             physical id: 19
             bus info: pci@0000:00:19.0
             logical name: enp0s25
             version: 04
             serial: 00:21:cc:cc:b2:27
             capacity: 1Gbit/s
             width: 32 bits
             clock: 33MHz
             capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
             configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.13-3 latency=0 link=no multicast=yes port=twisted pair
             resources: irq:25 memory:f3900000-f391ffff memory:f392b000-f392bfff ioport:6080(size=32)
        *-usb:0
             description: USB controller
             product: 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2
             vendor: Intel Corporation
             physical id: 1a
             bus info: pci@0000:00:1a.0
             version: 04
             width: 32 bits
             clock: 33MHz
             capabilities: ehci bus_master cap_list
             configuration: driver=ehci-pci latency=0
             resources: irq:16 memory:f392a000-f392a3ff
        *-multimedia
             description: Audio device
             product: 6 Series/C200 Series Chipset Family High Definition Audio Controller
             vendor: Intel Corporation
             physical id: 1b
             bus info: pci@0000:00:1b.0
             version: 04
             width: 64 bits
             clock: 33MHz
             capabilities: bus_master cap_list
             configuration: driver=snd_hda_intel latency=0
             resources: irq:29 memory:f3920000-f3923fff
        *-pci:1
             description: PCI bridge
             product: 6 Series/C200 Series Chipset Family PCI Express Root Port 1
             vendor: Intel Corporation
             physical id: 1c
             bus info: pci@0000:00:1c.0
             version: b4
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode cap_list
             configuration: driver=pcieport
             resources: irq:16
        *-pci:2
             description: PCI bridge
             product: 6 Series/C200 Series Chipset Family PCI Express Root Port 2
             vendor: Intel Corporation
             physical id: 1c.1
             bus info: pci@0000:00:1c.1
             version: b4
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:17 memory:f3800000-f38fffff
           *-network
                description: Wireless interface
                product: Centrino Advanced-N 6205 [Taylor Peak]
                vendor: Intel Corporation
                physical id: 0
                bus info: pci@0000:03:00.0
                logical name: wlp3s0
                version: 34
                serial: 26:ad:26:50:f1:db
                width: 64 bits
                clock: 33MHz
                capabilities: bus_master cap_list ethernet physical wireless
                configuration: broadcast=yes driver=iwlwifi driverversion=4.9.0-3-amd64 firmware=18.168.6.1 ip=192.168.0.102 latency=0 link=yes multicast=yes wireless=IEEE 802.11
                resources: irq:28 memory:f3800000-f3801fff
        *-pci:3
             description: PCI bridge
             product: 6 Series/C200 Series Chipset Family PCI Express Root Port 4
             vendor: Intel Corporation
             physical id: 1c.3
             bus info: pci@0000:00:1c.3
             version: b4
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:19 ioport:4000(size=4096) memory:f3000000-f37fffff ioport:f1800000(size=8388608)
        *-pci:4
             description: PCI bridge
             product: 6 Series/C200 Series Chipset Family PCI Express Root Port 5
             vendor: Intel Corporation
             physical id: 1c.4
             bus info: pci@0000:00:1c.4
             version: b4
             width: 32 bits
             clock: 33MHz
             capabilities: pci normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:16 ioport:3000(size=4096) memory:f2800000-f2ffffff ioport:f2000000(size=8388608)
           *-generic
                description: System peripheral
                product: MMC/SD Host Controller
                vendor: Ricoh Co Ltd
                physical id: 0
                bus info: pci@0000:0d:00.0
                version: 08
                width: 32 bits
                clock: 33MHz
                capabilities: bus_master cap_list
                configuration: driver=sdhci-pci latency=0
                resources: irq:16 memory:f2800000-f28000ff
        *-usb:1
             description: USB controller
             product: 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1
             vendor: Intel Corporation
             physical id: 1d
             bus info: pci@0000:00:1d.0
             version: 04
             width: 32 bits
             clock: 33MHz
             capabilities: ehci bus_master cap_list
             configuration: driver=ehci-pci latency=0
             resources: irq:23 memory:f3929000-f39293ff
        *-isa
             description: ISA bridge
             product: QM67 Express Chipset Family LPC Controller
             vendor: Intel Corporation
             physical id: 1f
             bus info: pci@0000:00:1f.0
             version: 04
             width: 32 bits
             clock: 33MHz
             capabilities: isa bus_master cap_list
             configuration: driver=lpc_ich latency=0
             resources: irq:0
        *-storage
             description: SATA controller
             product: 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller
             vendor: Intel Corporation
             physical id: 1f.2
             bus info: pci@0000:00:1f.2
             version: 04
             width: 32 bits
             clock: 66MHz
             capabilities: storage ahci_1.0 bus_master cap_list
             configuration: driver=ahci latency=0
             resources: irq:26 ioport:60a8(size=8) ioport:60bc(size=4) ioport:60a0(size=8) ioport:60b8(size=4) ioport:6060(size=32) memory:f3928000-f39287ff
        *-serial
             description: SMBus
             product: 6 Series/C200 Series Chipset Family SMBus Controller
             vendor: Intel Corporation
             physical id: 1f.3
             bus info: pci@0000:00:1f.3
             version: 04
             width: 64 bits
             clock: 33MHz
             configuration: driver=i801_smbus latency=0
             resources: irq:18 memory:f3924000-f39240ff ioport:efa0(size=32)
     *-scsi
          physical id: 2
          logical name: scsi1
          capabilities: emulated
        *-cdrom
             description: DVD-RAM writer
             product: DVDRAM GT50N
             vendor: HL-DT-ST
             physical id: 0.0.0
             bus info: scsi@1:0.0.0
             logical name: /dev/cdrom
             logical name: /dev/cdrw
             logical name: /dev/dvd
             logical name: /dev/dvdrw
             logical name: /dev/sr0
             version: LT20
             capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
             configuration: ansiversion=5 status=nodisc
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

 

Enjoy Life ! 🙂

Play the Dangerous Dave old arcade classic on iPhone, iPad and Android Smartphone – Dangerous Dave 1990’s computer arcade classic Mario like game phone Application

Thursday, April 27th, 2017

Dangerous_Dave_1990-entry-game-screen-computer-mario-like-game

I still remember the good old times with my 16 Bit Desktop Personal Computer Parvetz 8086 CPU where one of the most favourite games I used to play a computer substitute for Mario for DOS operation system was Dangerous Dave 2 (DDAVE.EXE) an arcade game classic game from the distant year 1990 authored by a whiz kid which later become world famous Computer game Programmer John Romero mostly known for being a cofounder of Game creation comppany ID Software  which authored the 3D Shooter genesis classics such as Wolfenstein 3D, Spear of Destiny, DOOM I and DOOM II HeXen I / II, QUAKE I,  QUAKE II, QUAKE II as well as some absolute arcade classics as Commander Keen 4 🙂

As John Romero shared himsef the game is actually inspired by Super Mario Bros so he decided to create a kinda of computer remake of the game in his teenage years and he did a great job yeah 🙂

There are similarities between Super Mario and Dangerous Dave as both have  the secret levels, the level design, the monsters, and the jump all around collecting cups with a final aim to end up in the level exit door.

The game was originally developed for Apple II and later reworked and ported to DOS and because of it is immerse popularity Dave 2, 3 and 4 come out short

The game is really awesome and worths all praise, I was nicely surprised to find out Dangerous Dave amazing game is available for Iphone 5, 5S and Iphone 6 right into Appstore

Here is the awesome Dangerous DAVE Iphone port description:

"Dave is a redneck on a rampage to reclaim his stolen trophies from the town bully, Clyde! Dangerous Dave is back in his classic adventure in the Deserted Pirate's Hideout. This recreation of the original 1990 DOS game is just as action-packed and difficult as the original! There are only 10 levels, but, wow, are they hard. "

Dangerous_Dave-level-2-computer-Mario-like-old-arcade-game-classic

I have to say the game controls are pretty much amazing and the game controls even though reimplemented on the Iphone touch screen device are truly amazing so gameplay resembles pretty much the Computer original game keyboard controls and in a sense the touch screen controls are a little bit more convenient.

The iOS Dave port is pretty nice and updated version is also available which is possible to be chosen on Game entry screen so you either play classic mode or you play the Dave in the Deserted pirated hideout updated version and sound Dave remake, below is a screenshot of the updated GUI version:

Dangerous_Dave-in-the-deserted-pirate-hideout-updated-dave-gui-mario-like-computer-arcade-classic-game

Dave in the deserted pirate hideout Updated GUI shot by Alfonso Romero – level 1

Dangerous_Dave_mario-like-computer-classic-arcade-jump-and-run-ios-dave-in-the-deserted-pirates-hideout

Dave in the deserted pirate hideout Updated GUI shot by Alfonso Romero – level 2

Dangerous_Dave_Computer_like_Mario-high-level-computer-classic-arcade==

Actually Dangerous Dave is also available for Android Smartphone devices even though the controllers suck a lot compared to the Iphone version if you happen to own an Android OS phone check here 

For those who don't own an Iphone or Android SmartPhone (lucky you) you can also play Dangerous Dave online via DOSBox Web emulation from this URL

Dangerous_Dave-computer-classic-game-now-for-iphone-level5-screenshot

For those who prefer to play Dangerous Dave as a standalone desktop application as in the good old times on Windows 7 / 8, 8.1 and Windows 10 both on 32 and 64 bits platform you can download it (as of moment of writting article) from here

A mirrored version of Dangerous Dave for Windows 7/8/10 on www.pc-freak.net in case if it disappears in future check here.

Our generation people born in 1983-1986 who are now about 33 years old has grown up with this game and I'm pretty sure if you happen to be one of those people will truly enjoy to replay the quick 10 game levels and remind the fuzzy computer arcade games age when every growing kid like me was obsessed with the idea to play and complete as much as games possible with countless nights in front of the Green and Black screen and later on SVGA screens geeking on and on loosing idea of time and space and being completely sunk by the game.

Dangerous_Dave_Level-9-classic-old-school-arcade-mario-like-game

Happy gaming ! 🙂