How to check Debian and Ubuntu version codename

check-linux-os-version-command-howto-check-linux-basic-stuff-lsb_release-command
Once you login to a new server the first thing to do especially if it is a server you never logged in is to check basic things as Kernel version with:

 

root@jeremiah:/home/hipo# uname -a;
Linux jeremiah 4.9.0-8-amd64 #1 SMP Debian 4.9.110-3+deb9u4 (2018-08-21) x86_64 GNU/Linux

 

Check remote server hardware configuration with tools as

 

# dmidecode
# lshw

 

For more check my previous article Get Hardware System Information on Linux

or directly checking things in proc with commands such as:

 

cat /proc/cpuinfo

 

or directly use some custom script such as system_state.sh – 

Next good thing to do is to check Linux install date:

And finally do check the exact codename of Linux on remote server, in the past in many Linux distros this was possible by checking /etc/issue and ./etc/issue.net files, now on Debian based distributions Ubuntu / Debian / Mint this can be achieved with:
 

root@jeremiah:/home/hipo# lsb_release -a
No LSB modules are available.
Distributor ID:    Debian
Description:    Debian GNU/Linux 9.5 (stretch)
Release:    9.5
Codename:    stretch

 

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