Sponsored Content
Top Forums Shell Programming and Scripting Linux kernel version comparision method Post 302909683 by veeresh_15 on Friday 18th of July 2014 09:01:22 AM
Old 07-18-2014
I think i figured out the code to compare kernel & rpm version's on Redhat Linux.
Below is the code that i have written and tested for various RPM's & kernel version.

Code:
expected_ver=2.6.32-279.el6.x86_64
received_ver=2.6.32-279.39.1.el6.x86_64

expected_v=$(echo $expected_ver|awk -F'.' '{if($NF ~ /[xi]*86/ && $(NF-1) ~ /el/) NF=NF-2; else if ($NF ~ /[xi]*86/ && $(NF-1) !~ /el/) NF=NF-1; else if ($NF ~ /el/) NF=NF-1; for (i=1;i<=NF;i++) printf $i".";}'|sed 's/.$//')

received_v=$(echo $received_ver|awk -F'.' '{if($NF ~ /[xi]*86/ && $(NF-1) ~ /el/) NF=NF-2; else if ($NF ~ /[xi]*86/ && $(NF-1) !~ /el/) NF=NF-1; else if ($NF ~ /el/) NF=NF-1; for (i=1;i<=NF;i++) printf $i".";}'|sed 's/.$//')

if [ "$expected_v" = "$received_v" ]; then
	echo "Installed Version is same than Expected."
    echo "Passed."
else
	min=$(echo -e $expected_v"\n"$received_v|sort -V|head -n 1)
	if [ "$min" = "$expected" ];then
       echo "Installed Version is higher than Expected."
       echo "Passed."
	else
       echo "== FAILED == Received output is not as expected."
	fi
fi

 

10 More Discussions You Might Find Interesting

1. Linux Benchmarks

Dual Xeon 2.6, RedHat EL 4 ES, up to latest release version. 2.6.9 kernel

============================================================== BYTE UNIX Benchmarks (Version 3.11) System -- Linux linux.hhc.ac.uk 2.6.9-11.ELsmp #1 SMP Fri May 20 18:26:27 EDT 2005 i686 i686 i386 GNU/Linux Start Benchmark Run: Wed Jul 6 15:06:07 BST 2005 1 interactive users.... (2 Replies)
Discussion started by: Garp
2 Replies

2. Linux

kernel version

Hi all, anyone know what should be the kernel version for red hat linux enterprise 3 update 3 . I have installed kernel version is 2.4.21-4 and some says that it may not be the red hat linux enterprise 3 update 3 . :o thanks Bert (4 Replies)
Discussion started by: bert.n
4 Replies

3. Solaris

How can i see kernel patch version?

Hello experts. How can i see kernel patch version? what are advantages applying that patch? Thanx in advance (5 Replies)
Discussion started by: younus_syed
5 Replies

4. Debian

how to find out the kernel version of a particular debian release ?

Is there any metrics table available somewhere listing out, which kernel version is there in particular debian release ? Also, can somebody tell which debian release is having the kernel version 2.6.26 ? (1 Reply)
Discussion started by: thegeek
1 Replies

5. Shell Programming and Scripting

Incorrect kernel version (why).

ps -A | grep firefox | kill `awk '{print $1}'` Warning: /boot/System.map-2.6.35.11-83.fc14.x86_64 has an incorrect kernel version. The command have succeeded but with the warning. The command before the previous one had not been successful. But there was also this warning. (1 Reply)
Discussion started by: Xcislav
1 Replies

6. Red Hat

Downgrade kernel version with yum

Dear all, Now I need to downgrade my current kernel to 2.6.12 I found some pages with Google, and they said that I can do it with yum, but there is not details information. How can I use yum to downgrade kernel version :wall: Please help me Thank you very much (4 Replies)
Discussion started by: Hannibal2010
4 Replies

7. Solaris

about the Kernel version ?!!

Hi All I have the below information ... and I want to know how to get the lats Kernel version ? and is this Kernel version SunOS 5.10 Generic_147440-13 last version or what ? - Hostname: server1 Release: 5.10 Kernel architecture: sun4u Application architecture: sparc Hardware... (1 Reply)
Discussion started by: roooooot
1 Replies

8. Shell Programming and Scripting

get the perl version (decimal value comparision)

Hi All, can you pls throw some light for below logic -> Check the perl version -> if the version is greater than or equal to 5.8 -> proceed to next step -> else fail Regards Kamal (2 Replies)
Discussion started by: kamauv234
2 Replies

9. Red Hat

Kernel version required for installing KVM

Hi friends, I have a created a RHEL 6.4 for installing KVM in Virtual box. My machine is a 64 bit, but virtual box was not allowing to install x86_64 version RHEL. So I had to install 32 bit i686 version of RHEL. The kernel came with the CD was 2.6.32-358.el6.i686. But KVM doesnt support... (2 Replies)
Discussion started by: shyam2j
2 Replies

10. HP-UX

Regarding firmware and kernel version of HP-UX systems.

Dear All, Please help to find out the patch and firmware versions in HP-UX systems. as uname -r is showing os version and uname -a HP-UX xxxxxx B.11.23 U 9000/800 2781427196 unlimited-user license. Kindly help to find out the existing Kernel and firmware versions. Also I need to... (3 Replies)
Discussion started by: anuragr
3 Replies
SYSLOGOUT(8)						      System Manager's Manual						      SYSLOGOUT(8)

NAME
syslogout - modular centralized shell logout mechanism DESCRIPTION
syslogout is a generic approach to enable centralized shell logout actions for all users of a given system in a modular and centralized way mostly aimed at avoiding work for lazy sysadmins. It has only been tested to work with the bash shell. It basically consists of the small /etc/syslogout shell script which invokes other small shell scripts having a .bash suffix which are con- tained in the /etc/syslogout.d/ directory. The system administrator can drop in any script he wants without any naming convention other than that the scripts need to have a .bash suffix to enable automagic sourcing by the /etc/syslogout script. For shell sessions, the contents of /etc/syslogout.d/" will be sourced by every user at logout if the following lines are present in his $HOME/.bash_logout: if [ -f /etc/syslogout ]; then . /etc/syslogout fi If used for X sessions it is advisable to include the former statement into the Xreset script of the X display manager instead to prevent that closing of an terminal emulator window yields unexpected results in your running X session if your X11 terminal emulator is using a login shell. Be sure then to run it under the user-id of the X session's user. See the example files in /usr/share/doc/syslogout/ for illustration. Users not wanting /etc/syslogout to be sourced for their environment can easily disable it's automatic mechanism. It can be disabled by simply creating an empty file called $HOME/.nosyslogout in the user's home directory using e.g. the touch(1) command. Any single configuration file in /etc/syslogout.d/ can simply be overridden by any user by creating a private $HOME/.syslogout.d/ directory which may contain a user's own version of any configuration file to be sourced instead of the system default. It's names have just to match exactly the system's default /etc/syslogout.d/ configuration files. Empty versions of these files contained in the $HOME/.syslo- gout.d/ directory automatically disable sourcing of the system wide version. Naturally, users can add and include their own private scripts to be automagically executed by /etc/syslogout at logout time. OPTIONS
There are no options other than those dictated by shell conventions. Anything is defined within the configuration scripts themselves. SEE ALSO
The README files and configuration examples contained in /usr/share/doc/syslogout/ and the manual page for bash(1), xdm(1x), xdm.options(5), and wdm(1x). Recommended further reading is everything related with shell programming. If you need a similar mechanism for executing code at login time check out the related package sysprofile(8) which is a very close compan- ion to syslogout. BUGS
syslogout in its current form is mainly restricted to bash(1) syntax. In fact it is actually a rather embarrassing quick and dirty hack than anything else - but it works. It serves the practical need to enable a centralized bash configuration until something better becomes available. Your constructive criticism in making this into something better" is very welcome. Before i forget to mention it: we take patches... ;-) AUTHOR
syslogout was developed by Paul Seelig <pseelig@debian.org> specifically for the Debian GNU/Linux system. Feel free to port it to and use it anywhere else under the conditions of either the GNU public license or the BSD license or both. Better yet, please help to make it into something more worthwhile than it currently is. SYSLOGOUT(8)
All times are GMT -4. The time now is 06:10 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy