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check linux version (lsb_release -a) ubuntu debian 32 or 64 bit

 

how to check linux version?

as a linux admin, we may forgot just Like RAM – memory, until some repetitions and practice. here are few commands to check linux distribution version.

you may remember this word lsab -release but actually its

lsb_release -a

 

lsb_release -a command for ubuntu & debian systems

sudo lsb_release -a

root@-s-4vcpu-8gb-blr1-01:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.5 LTS
Release: 18.04
Codename: bionic

or

root@-s-4vcpu-8gb-blr1-01:~# lsb_release -d
Description: Ubuntu 18.04.5 LTS

 

lsb_release -a preferable because we need code name install applications like nginx

check linux version with cat command

command to remember os-release (remaining cat and etc directory automatically triggers)

 

root@-s-4vcpu-8gb-blr1-01:~# cat /etc/os-release
NAME=”Ubuntu”
VERSION=”18.04.5 LTS (Bionic Beaver)”
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME=”Ubuntu 18.04.5 LTS”
VERSION_ID=”18.04″
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=bionic

cat /etc/issue command to check linux version

root@-s-4vcpu-8gb-blr1-01:~# cat /etc/issue
Ubuntu 18.04.5 LTS \n \l

hostnamectl to check linux version & kernel

root@-s-4vcpu-8gb-blr1-01:~# hostnamectl
Static hostname: -s-4vcpu-8gb-blr1-01
Icon name: computer-vm
Chassis: vm
Machine ID: 21ce09bb9afd4146a09f98628219520c
Boot ID: 3a6c079ec3ab4ed0ada4b47114d6320d
Virtualization: kvm
Operating System: Ubuntu 18.04.5 LTS
Kernel: Linux 4.15.0-140-generic
Architecture: x86-64

check linux version centos

lsb_release -a

uname -a

rpm –query centos-release

cat /etc/system-release

check linux version 32 or 64

hostnamectl  command helps for linux os 32 or 64 bit.

 

root@-s-4vcpu-8gb-blr1-01:~# hostnamectl | grep Architecture
Architecture: x86-64

 

 

How do I find the RHEL version?

cat /etc/redhat-release

rpm –query redhat-release

cat /etc/system-release

uname command to find linux version

root@-s-4vcpu-8gb-blr1-01:~# uname -srm
Linux 4.15.0-140-generic x86_64

root@-s-4vcpu-8gb-blr1-01:~# uname -a
Linux -s-4vcpu-8gb-blr1-01 4.15.0-140-generic #144-Ubuntu SMP Fri Mar 19 14:12:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

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