How to check the installation date of a kernel in Linux? [closed]

I have been asked to check the installation date of a kernel which is already installed in my Linux server. Is there a way to check when the kernel would have got installed in Linux server ?

Answer

Check kernel installation date:

#rpm -qa --last | grep kernel

kernel-2.6.32-504.el6.x86_64                  Thu Feb 12 00:40:00 2015

For more info about kernel package:

# rpm -qi setup

Name        : setup                        Relocations: (not relocatable)
Version     : 2.8.14                            Vendor: Red Hat, Inc.
Release     : 20.el6_4.1                    Build Date: Tue Aug 20 04:24:24 2013
Install Date: Thu Feb 12 00:11:15 2015         Build Host: ppc-007.build.bos.redhat.com
Group       : System Environment/Base       Source RPM: setup-2.8.14-20.el6_4.1.src.rpm
Size        : 666477                           License: Public Domain
Signature   : RSA/8, Thu Sep 12 06:27:42 2013, Key ID 199e2f91fd431d51
Packager    : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla>
URL         : https://fedorahosted.org/setup/
Summary     : A set of system configuration and setup files
Description :
The setup package contains a set of important system configuration and
setup files, such as passwd, group, and profile.