today i wanted to find out what kernel version i had installed in my server, i can't believe i cound remember the command to find what version i had installed in my server linux box, but i found it, so just in case anyone outhere is also having the same question i will give you the command.

note, this worked for me, i have fedora core on my server, which i think will also work on red had, centos, but not sure if it will work on other distributions like suse, mandrake or Debian.

CODE:
rpm -qa | grep 'kernel'


here are some others, but the one above worked great for me

CODE:
$ rpm -q kernel kernel-headers kernel-ibcs kernel-pcmcia-cs kernel-source

kernel-2.0.36-0.7
kernel-headers-2.0.36-0.7
kernel-ibcs-2.0.36-0.7
kernel-pcmcia-cs-2.0.36-0.7
kernel-source-2.0.36-0.7

$ rpm -q mkinitrd SysVinit initscripts

mkinitrd-1.8-3
SysVinit-2.74-5
initscripts-3.78-1


If you have Red Hat Linux 4.2 on your machine, you will need to change the query slightly to reflect name changes in packages that occurred in the Red Hat Linux 5.x series of releases.
CODE:
$ rpm -q kernel kernel-headers kernel-source iBCS pcmcia-cs

kernel-2.0.35-0
kernel-headers-2.0.35-0
kernel-modules-2.0.35-0
kernel-source-2.0.35-0
iBCS-2.0-8
pcmcia-cs-2.9.12-0

$ rpm -q mkinitrd SysVinit initscripts

mkinitrd-1.7-1
initscripts-2.96-1
SysVinit-2.64-8


you can also use the uname command like this:

CODE:
uname -r

NAME
       uname - print system information

SYNOPSIS
       uname [OPTION]...

DESCRIPTION
       Print certain system information.  With no OPTION, same as -s.

       -a, --all
              print  all  information,  in the following order, except omi  -p
              and -i if unknown:

       -s, --kernel-name
              print the kernel name

       -n, --nodename
              print the network node hostname

       -r, --kernel-release
              print the kernel release

       -v, --kernel-version
              print the kernel version

       -m, --machine
              print the machine hardware name

       -p, --processor
              print the processor type or "unknown"

       -i, --hardware-platform
              print the hardware platform or "unknown"

       -o, --operating-system
              print the operating system

       --help display this help and exit

       --version
              output version information and exit