Posts Tagged ‘indent’

VIM and VI UNIX text editor syntax highlighting and howto add remove code auto indent

Tuesday, February 4th, 2014

vim-vi-linux-text-editor-logo-vim-highlighting how to turn vim syntax highlighting on linux

For my daily system administration job I have to login to many SuSE Linux servers and do various configugration edits.
The systems are configured in different ways and the only text editors available across all servers I can use are VI and VIM (VI Improved).

As I usually had to edit configuration files and scripts and I'm on SSH color terminal its rather annoying that on some of the servers opening a file with VIM is not displayed with SYNTAX HIGHLIGHTING. Not having syntax highlighting is ugly and makes editting ugly and unreadable.
Thus it is useful to enable VI syntax highlighting straight into the file being editted. I suspect many novice sysadmins might not know how to turn syntax highlighting in vi so here is how.

Turn Syntax Highlighting in VIM


1. Open file with vim lets say Apache configuration

# vim /etc/apache2/apache2.conf

2. Press (Esc) Escape and ":" from kbd and then type in syntax on

:syntax on


To Turn On / Off VI Syntax Highlighting permanent add ":syntax on"
into ~/.vimrc

~/.vimrc file is red automatically on VIM start, so right after :syntax on is appended in it on relaunch vim will start showing colorfully.

Enjoy ! 🙂


Installing qmailmrtg (qmail graph statistics on qmail activity) on Debian Lenny

Monday, April 19th, 2010

1. First it’s necessery to have the mrtg debian package installed.
If it’s not installed then we have to install it:

debian-server:~# apt-get install mrtg

2. Second download the qmailmrtg source binary
To download the latest current source release of qmailmrtg execute:

debian-server:~# wget

It’s a pity qmailmrtg is not available for download via debian repositories.

3. Third download the qmail.mrtg.cfg configuration file

debian-server~# wget

Now you have to put the file somewhere, usually it’s best to put it in the /etc/ directory.
Make sure the file is existing in /etc/qmail.mrtg.cfg
4. Untar compile and install qmailmrtg binary

debian-server:~# tar -xzvvf qmailmrtg7-4.2.tar.gz
debian-server:~# make && make install

strip qmailmrtg7
cp qmailmrtg7 /usr/local/bin
rm -rf *.o qmailmrtg7 checkq core
cc checkq.c -o checkq
cc -s -O qmailmrtg7.c -o qmailmrtg7
qmailmrtg7.c: In function ‘main’:
qmailmrtg7.c:69: warning: incompatible implicit declaration of
built-in function ‘exit’
qmailmrtg7.c:93: warning: incompatible implicit declaration of
built-in function ‘exit’
qmailmrtg7.c:131: warning: incompatible implicit declaration of
built-in function ‘exit’
qmailmrtg7.c:137: warning: incompatible implicit declaration of
built-in function ‘exit’

5. Set proper file permissions according to the user you indent to execute qmailmrtg as
I personally execute it as root user, if you intend to do so as well set a permissions to
/etc/qmail.mrtg.cfg of 700.
In order to do that issue the command:

debian-server:~# chmod 700 /etc/qmail.mrtg.cfg

6. You will now need to modify the qmail.mrtg.cfg according to your needs
There you have to set a proper location where the qmailmrtg shall generate it’s html data files.
I use the /var/www/qmailmrtg qmailmrtg log file location. If you will do so as wellyou have to create the directory.

7. Create qmailmrtg html log files directory

debian-server:~# mkdir /var/log/qmailmrtg

8. Now all left is to set a proper cron line to periodically invoke qmailmrtg in order to generate qmail activity statistics.

Before we add the desired root’s crontab instructions we have to open the crontab for edit, using the command.

debian-server:~# crontab -u root -e

I personally use and recommend the following line as a line to be added to root’s crontab.

0-55/5 * * * * env LANG=C /usr/bin/mrtg /etc/qmail.mrtg.cfg > /dev/null
9. Copy index.html from qmailmrtg source directory to /var/log/qmailmrtg

debian-server:/usr/local/src/qmailmrtg7-4.2# cp -rpf index.html /var/log/qmailmrtg

10. Last step is to make sure Apache’s configuration contains lines that will enable you to access the qmail activity statistics.

The quickest way to do that in Debian running Apache 2.2 is to edit /etc/apache2/apache2.conf and add a directory Alias as follows

Alias /qmailmrtg/ "/var/www/qmailmrtg/"

Now after Apache restart /etc/init.d/apache2 restart
You should be now able to access the qmail mrtg qmail log statistics through your Apache’s default configured host.
For instance, assuming your default configured Apache host is You’ll be able to reach the qmailmrtg statistics through an url like:

After I verified and ensured myself qmail mrtg is working correctly after all the above explained steps partook I wasn’t happy with some headlines in the index.html and the html tile of qmailmrtg,
so as a last step I manually edited the /var/www/qmailmrtg/index.html to attune it to my likings.

Here is a screenshot of the qmailmrtg web statistics in action.

qmail mrtg on debian lenny