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to check the Linux upgrade in the host

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# 1  
Old 03-01-2010
to check the Linux upgrade in the host
Hi,

how to check when was the linux upgrade has been done to this host.

below command show the RHEL version.
cat /etc/redhat-release
Red Hat Enterprise Linux AS release 3 (Taroon Update 6)


i want to know when it was upgraded..
is there any command available for that ? or anywhere we can check ?

Thanks
# 2  
Old 03-02-2010
Code:
cat /proc/version

or

Code:
uname -a

# 3  
Old 03-02-2010
its not showing the date when linux upgraded..

in my machine i upgraded Red hat linux server release 5.3 on 26 feb 2010
in anywhere i am unable to see that the new version upgraded on 26th feb.
before that i was running linux 3.
# 4  
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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