Question

How to check what version of Linux installed in my machine

Asked by: motioneye

How do I check what is the Linux version installed on my machine? and how do I check for the system uptime

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Asked On
2007-07-05 at 08:18:47ID22677000
Tags

version

,

linux

,

check

,

how

Topic

Linux Administration

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Answers

 

by: BibliophagePosted on 2007-07-05 at 09:14:42ID: 19425208

The actual 'version' is greatly variable, depending on whether you want to know the kernel version, the distribution itself, or release.

From a command prompt, the command 'uname -a' should give you the kernel version.  Putting that string into Google will generally cross-reference it into a particular distribution release version.  

To check the uptime, most Linux systems will accept 'uptime' as a command line option.  It'll generally show you everything in days.

 

by: TintinPosted on 2007-07-05 at 13:43:10ID: 19427172

Also try

cat /etc/*release*

 

by: BibliophagePosted on 2007-07-05 at 20:30:10ID: 19429330

"cat /etc/*release*" doesn't work on all linux distributions.   For example, Slackware has a version ID, but it's in /etc/slackware-version

 

by: TintinPosted on 2007-07-05 at 21:04:26ID: 19429451

I know it doesn't work on all linux distributions, but it probably covers the majority that most people use.

 

by: ssvlPosted on 2007-07-05 at 21:06:15ID: 19429461

for version
         
          kernal version:   uname -a

          os Version       :/etc/*release*( /etc/redhat-release)

                                                            (/etc/SuSE-release)


to find the up time

           uptime
           top

 

by: ssvlPosted on 2007-07-05 at 21:09:30ID: 19429471

elease Information File

Most of the Linux distributions maintain release information file in an/etc/directory. Here is the list of files on some of the well known Linux distributions:


Novell SUSE       /etc/SuSE-release
Red Hat       /etc/redhat-release, /etc/redhat_version
Fedora       /etc/fedora-release
Slackware       /etc/slackware-release, /etc/slackware-version
Debian       /etc/debian_release, /etc/debian_version,
Mandrake       /etc/mandrake-release
Yellow dog       /etc/yellowdog-release
Sun JDS       /etc/sun-release
Solaris/Sparc       /etc/release
Gentoo       /etc/gentoo-release
UnitedLinux       /etc/UnitedLinux-release
ubuntu       /etc/lsb-release

 

by: ssvlPosted on 2007-07-05 at 21:11:46ID: 19429477

Using system command uname and contents of the release files you can write scripts of programs to help  to detect distribution.


#!/bin/sh
# Detects which OS and if it is Linux then it will detect which Linux Distribution.

OS=`uname -s`
REV=`uname -r`
MACH=`uname -m`

GetVersionFromFile()
{
      VERSION=`cat $1 | tr "\n" ' ' | sed s/.*VERSION.*=\ // `
}

if [ "${OS}" = "SunOS" ] ; then
      OS=Solaris
      ARCH=`uname -p`      
      OSSTR="${OS} ${REV}(${ARCH} `uname -v`)"
elif [ "${OS}" = "AIX" ] ; then
      OSSTR="${OS} `oslevel` (`oslevel -r`)"
elif [ "${OS}" = "Linux" ] ; then
      KERNEL=`uname -r`
      if [ -f /etc/redhat-release ] ; then
            DIST='RedHat'
            PSUEDONAME=`cat /etc/redhat-release | sed s/.*\(// | sed s/\)//`
            REV=`cat /etc/redhat-release | sed s/.*release\ // | sed s/\ .*//`
      elif [ -f /etc/SuSE-release ] ; then
            DIST=`cat /etc/SuSE-release | tr "\n" ' '| sed s/VERSION.*//`
            REV=`cat /etc/SuSE-release | tr "\n" ' ' | sed s/.*=\ //`
      elif [ -f /etc/mandrake-release ] ; then
            DIST='Mandrake'
            PSUEDONAME=`cat /etc/mandrake-release | sed s/.*\(// | sed s/\)//`
            REV=`cat /etc/mandrake-release | sed s/.*release\ // | sed s/\ .*//`
      elif [ -f /etc/debian_version ] ; then
            DIST="Debian `cat /etc/debian_version`"
            REV=""

      fi
      if [ -f /etc/UnitedLinux-release ] ; then
            DIST="${DIST}[`cat /etc/UnitedLinux-release | tr "\n" ' ' | sed s/VERSION.*//`]"
      fi
      
      OSSTR="${OS} ${DIST} ${REV}(${PSUEDONAME} ${KERNEL} ${MACH})"

fi


echo ${OSSTR}

 

by: ssvlPosted on 2007-07-05 at 21:13:00ID: 19429480

Using system command uname and contents of the release files you can write your own program to detect the OS or which Linux distribution is installed. You can refer

http://cvs.gnome.org/viewcvs/*checkout*/gnome-doorman/src/rc-distro.c?rev=1.5

 

by: motioneyePosted on 2007-07-05 at 21:25:37ID: 19429534

Ok I found it. And my last question before closing this topic, where can I have online resources about this version of linux? a command and administration?

$ cat /etc/*release*
SUSE Linux Enterprise Server 10 (x86_64)
VERSION = 10

 

by: TintinPosted on 2007-07-05 at 21:46:00ID: 19429589

See http://www.novell.com/documentation/sles10/index.html

for all documentation regarding SUSE Enterprise Server 10.

 

by: eje211Posted on 2007-07-07 at 06:56:11ID: 19437400

For the uptime, try the commands "uptime" (without the quotation marks). The command "top" (without the quotation marks) will also give you your uptime on the top line of its output.

When people say "version" of Linux, they usually mean "distribution". A version of Linux applies to the kernel. The latest version is about 2.6.21. A distribution is, for example, Fedora, SuSE or Ubuntu.

The command "uname -a" (without the quotation marks) should give you your version. The following (long) command, will, hopefully, give you information about your distribution:

for this in /etc/SuSE-release /etc/redhat-release /etc/redhat_version /etc/fedora-release /etc/slackware-release /etc/slackware-version /etc/debian_release /etc/debian_version /etc/mandrake-release /etc/yellowdog-release /etc/sun-release /etc/release /etc/gentoo-release /etc/issue /etc/issue.logo ; do cat $this 2> /dev/null ; done

20120131-EE-VQP-002

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