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How to check os version in Linux command line

The procedure to find os name and version on Linux:

Open the terminal application (bash shell)
For remote server login using the ssh: ssh user@server-name
Type any one of the following command to find os name and version in Linux:
cat /etc/os-release
lsb_release -a
hostnamectl
Type the following command to find Linux kernel version:
uname -r

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