Best way to find os name and version in Unix Linux platform

Question

I need to find the OS name and version on Unix Linux platform  For this I tried following    lsb release utility  etc redhat-release or specific file   But it does not seem to be best solution as LSB RELEASE support is no longer for RHEL 7   Is there any way that will work on any Unix or Linux platform

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this command gives you a description of your operating system  cat  etc os-release

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My own take at  kvivek s script  with more easily machine parsable output      bin sh   Outputs OS Name  Version  amp  misc  info in a machine-readable way    See also NeoFetch for a more professional and elaborate bash script    https   github com dylanaraps neofetch  SEP     PRINT HEADER false  print help          echo   basename  0  - Outputs OS Name  Version  amp  misc  info      echo  in a machine-readable way       echo     echo  Usage       echo       basename  0   OPTIONS       echo  Options       echo      -h  --help           print this help message      echo      -n  --names          print a header line  naming the fields      echo      -s  --separator SEP  overrides the default field-separator    SEP   with the supplied one       parse command-line args while      -gt 0   do     arg   1      shift   past switch      case    arg   in         -h --help              print help             exit 0                        -n --names              PRINT HEADER true                        -s --separator              SEP   1              shift   past value                             non- unknown option             echo  Unknown switch   arg    gt  amp 2             print help                    esac done  OS  uname -s  DIST  N A  REV  uname -r  MACH  uname -m  PSUEDONAME  N A   GetVersionFromFile         VERSION  cat  1   tr   n        sed s   VERSION             if      OS      SunOS      then     DIST Solaris     DIST VER  uname -v        also  cat  etc release elif      OS      AIX      then     DIST    OS       DIST VER  oslevel -r  elif      OS      Linux      then     if   -f  etc redhat-release     then         DIST  RedHat          PSUEDONAME  sed -e  s         -e  s        etc redhat-release           DIST VER  sed -e  s   release      -e  s          etc redhat-release       elif   -f  etc SuSE-release     then         DIST  cat  etc SuSE-release   tr   n       sed s VERSION              DIST VER  cat  etc SuSE-release   tr   n        sed s              elif   -f  etc mandrake-release     then         DIST  Mandrake          PSUEDONAME  sed -e  s         -e  s        etc mandrake-release          DIST VER  sed -e  s   release      -e  s          etc mandrake-release      elif   -f  etc debian version     then         DIST  Debian          DIST VER  cat  etc debian version      PSUEDONAME  lsb release -a 2 gt   dev null   grep   Codename     sed -e  s      space             elif   -f  etc gentoo-release     then          TODO      elif   -f  etc slackware-version     then          TODO     elif   -f  etc issue     then           We use this indirection because  etc issue may look like        Debian GNU Linux 10  n  l          ISSUE  cat  etc issue          ISSUE  echo -e    ISSUE     head -n 1   sed -e  s    space                   DIST  echo -e    ISSUE     sed -e  s    space                  DIST VER  echo -e    ISSUE     sed -e  s      space            fi     if   -f  etc UnitedLinux-release     then         DIST    DIST   cat  etc UnitedLinux-release   tr   n        sed s VERSION            fi       NOTE  sed -e  s        -e  s         proc version             is an option that worked   2010 and earlier fi  if  PRINT HEADER then     echo  OS  SEP Distribution  SEP Distribution-Version  SEP Pseudo-Name  SEP Kernel-Revision  SEP Machine-Architecture  fi echo    OS   SEP   DIST   SEP   DIST VER   SEP   PSUEDONAME   SEP   REV   SEP   MACH     NOTE  Only tested on Debian 11  Example Runs  No args  osInfo   output   Linux Debian 10 0 buster 4 19 0-5-amd64 x86 64   Header with names and custom separator  osInfo --names -s   t      output   OS    Distribution    Distribution-Version    Pseudo-Name     Kernel-Revision     Machine-Architecture Linux     Debian      10 0    buster      4 19 0-5-amd64      x86 64   Filtered output  osInfo   awk -e  BEGIN   FS          print  2      3       4          output   Debian 10 0  buster

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Following command worked out for me nicely  It gives you the OS name and version   lsb release -a

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This work fine for all Linux environment      bin sh cat  etc  -release   In Ubuntu     cat  etc  -release DISTRIB ID Ubuntu DISTRIB RELEASE 10 04 DISTRIB CODENAME lucid DISTRIB DESCRIPTION  Ubuntu 10 04 4 LTS    or 12 04     cat  etc  -release  DISTRIB ID Ubuntu DISTRIB RELEASE 12 04 DISTRIB CODENAME precise DISTRIB DESCRIPTION  Ubuntu 12 04 4 LTS  NAME  Ubuntu  VERSION  12 04 4 LTS  Precise Pangolin  ID ubuntu ID LIKE debian PRETTY NAME  Ubuntu precise  12 04 4 LTS   VERSION ID  12 04    In RHEL     cat  etc  -release Red Hat Enterprise Linux Server release 6 5  Santiago  Red Hat Enterprise Linux Server release 6 5  Santiago    Or Use this Script      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

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With perl and Linux  Distribution  the cleanest solution for an old problem       bin sh  perl -e       use Linux  Distribution qw distribution name distribution version        my  linux   Linux  Distribution- gt new      if my  distro    linux- gt distribution name                my  version    linux- gt distribution version              print  you are running  distro             print   version  version  if  version            print   n         else             print  distribution unknown n

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In every distribute it has difference files so I write most common ones   ---- CentOS Linux distro  cat  proc version  ---- Debian Linux distro  cat  etc debian version  ---- Redhat Linux distro  cat  etc redhat-release   ---- Ubuntu Linux distro  cat  etc issue    or    cat  etc lsb-release    in last one  etc issue didn t exist so I tried the second one and it returned the right answer

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With quotes   cat  etc  -release   grep  PRETTY NAME    sed  s PRETTY NAME   g    gives output as     CentOS Linux 7  Core     Without quotes   cat  etc  -release   grep  PRETTY NAME    sed  s PRETTY NAME   g    sed  s    g    gives output as   CentOS Linux 7  Core

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The  lsb release  command provides certain Linux Standard Base and distribution-specific information  So using the below command we can get Operating system name and operating system version    lsb release -a

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I prepared following commands to find concise information about a Linux system    clear echo   n----------OS Information------------  hostnamectl   grep  Static hostname   hostnamectl   tail -n 3 echo   n----------Memory Information------------  cat  proc meminfo   grep MemTotal echo   n----------CPU Information------------  echo -n  Number of core s     cat  proc cpuinfo   grep  processor    wc -l cat  proc cpuinfo   grep  model name    head -n 1 echo   n----------Disk Information------------  echo -n  Total Size    df -h --total   tail -n 1  awk   print  2   echo -n  Used    df -h --total   tail -n 1  awk   print  3   echo -n  Available    df -h --total   tail -n 1  awk   print  4   echo   n------------------------------------- n    Copy and paste in an sh file like info sh and then run it using command sh info sh

[linux] Best way to find os name and version in Unix/Linux platform

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