Linux How to Check Operating System (O/S) Version

From myWiki

Type any one of the following command to find os name and version in Linux: 

cat /etc/os-release
lsb_release -a
hostnamectl



stevet@wiki:/var/lib/mediawiki$ cat /etc/os-release
NAME="Ubuntu"
VERSION="20.04 LTS (Focal Fossa)"
ID=ubuntu
ID_LIKE=
PRETTY_NAME="Ubuntu 20.04 LTS"
VERSION_ID="20.04"
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
VERSION_CODENAME=focal
UBUNTU_CODENAME=focal
stevet@wiki:/var/lib/mediawiki$ lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04
Release: 20.04
Codename: focal

stevet@wiki:/var/lib/mediawiki$ hostnamectl 
  Static hostname: wiki
        Icon name: computer
       Machine ID: 561a386d67b140d1829ee7e3e33293b9
          Boot ID: a478669cfef54a6a9b46195b82923dcc
 Operating System: Ubuntu 20.04 LTS
           Kernel: Linux 5.4.0-1013-raspi
     Architecture: arm64

Type the following command to find Linux kernel version: 

uname -r
stevet@wiki:/var/lib/mediawiki$ uname -r

5.4.0-1013-raspi


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