How to check Linux OS version
How to check Linux OS version
You can use different commands to check the Linux OS version. Follow the below steps to check the installed OS version on CentOS / Redhat servers.
How to check OS version on CentOS, Redhat and Fedora servers
1. Log into your CentOS, Redhat or Fedora server via SSH as ‘root’ user or as sudo user
2. Run any of the below commands to check the OS version of your CentOS Redhat server
Command 1 : cat /etc/redhat-release

How to check CentOS Redhat Fedora OS version
Command 2 :cat /etc/os-release

How to check OS version of CentOS Redhat Fedora servers
Command 3 : cat /etc/centos-release

How to check OS version of CentOS Redhat Fedora server
Command 4 :lsb_release -a

How to check OS version of CentOS Redhat Fedora Servers
3. If package ‘redhat-lsb-core’ is installed, you can use the command ‘lsb_release -a’ to check the OS version
How to check OS version on Debian and Ubuntu servers
1. Log into your Debian or Ubuntu server via SSH as ‘root’ user or as sudo user
2. Run any of the below commands to check the OS version
Command 1 : cat /etc/lsb-release

How to check Ubuntu Debian OS version
Command 2 : cat /etc/os-release

How to check Ubuntu Debian OS version
Command 3 : cat /etc/issue

How to check Ubuntu Debian OS version 3
Command 4 : lsb_release -a

How to check OS version debian ubuntu
Command 5 : cat /etc/issue.net
Ubuntu 18.04.4 LTS
How to check Linux kernel Version
1. Open the terminal
2. Log into your Linux server via SSH as ‘root’ user or as sudo user
3. Run the command ‘uname -r’ to check the Kernel release
4.4.0-142-generic
OR
# uname --kernel-release
4.4.0-142-generic