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Full Discussion: to check the Linux upgrade in the host
Top Forums Shell Programming and Scripting to check the Linux upgrade in the host Post 302400278 by drl on Tuesday 2nd of March 2010 09:06:18 PM
Old 03-02-2010
Hi.

I use CentOS 5.4, the free version of RedHat. I looked in /var/log, and found some logs for "yum". Here is a script that shows a sample of when some updates were made:
Code:
#!/usr/bin/env bash

# @(#) s1	Demonstrate time of update.

echo
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) 
set -o nounset
echo


ls -l /var/log/yum*

echo
head -3 /var/log/yum.log

exit 0

producing:
Code:
$ ./s1

(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 2.6.18-164.11.1.el5, i686
Distribution        : CentOS release 5.4 (Final)
GNU bash 3.2.25

-rw-r--r-- 1 root root  3308 Feb  5 12:00 /var/log/yum.log
-rw-r--r-- 1 root root 43464 Dec 23 18:33 /var/log/yum.log.1
-rw-r--r-- 1 root root 38360 Jan  2  2009 /var/log/yum.log.2

Feb 05 11:50:24 Updated: selinux-policy-2.4.6-255.el5_4.4.noarch
Feb 05 11:50:31 Updated: kernel-headers-2.6.18-164.11.1.el5.i386
Feb 05 11:50:50 Updated: tzdata-2009u-1.el5.noarch

I have no idea if this is always the case for an update. The files may contain more than one set of updates, so you may need to process to collect the unique dates.

Best wishes ... cheers, drl
 

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LEARN ABOUT CENTOS

yum-changelog.conf

YUM-CHANGELOG.CONF(5)						   File Formats 					     YUM-CHANGELOG.CONF(5)

NAME

       yum-changelog.conf(5)

SYNOPSIS

       yum-changelog.conf(5)  is  the configuration file for yum-changelog(1) Yum plugin for viewing package changelogs before/after updating.	By
       default, this plugin will show the changelogs before the updates.

FILES

       /etc/yum/pluginconf.d/changelog.conf

FILE FORMAT

       yum-changelog.conf(5) utilizes configuration options in the form of

       OPTION=VALUE

OPTION

       when   This option reflects when yum-changelog(1) will allow changelog viewing during yum updates.

VALUE

       pre    To make yum-changelog(5) show the changelog before the yum updates

       post   To make yum-changelog(5) show the changelog after the yum updates.

OPTION

       always This option reflects specifies if the changelog should always be shown.

VALUE

       true   The changelog is always displayed.

       false  A command line option is required for the changelog to be displayed.

OPTION

       updateinfo
	      This option specifies that the "changelog" from the repo. updateinfo should be shown.

VALUE

       true   The updateinfo is displayed.

       false  The updateinfo is never displayed.

OPTION

       updateinfo_always
	      This option reflects specifies if the "changelog" from the repo. should always be shown (note that if updateinfo is false then  this
	      option has no meaning).

VALUE

       true   The updateinfo is always displayed.

       false  A command line option is required for the updateinfo to be displayed.

AUTHOR

	      Chitlesh Goorah <chitlesh@fedoraproject.org>

SEE ALSO

       yum-changelog(1)

								 08 FEBRUARY 2007					     YUM-CHANGELOG.CONF(5)
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