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Show the Debian or Ubuntu version of a server

harmlessDebian and APTdebian, ubuntu
user@server
cat /etc/debian_version && grep -E '^(PRETTY_NAME|VERSION_CODENAME)=' /etc/os-release

First shows the point release from /etc/debian_version (for example 12.7), then the full name and codename from /etc/os-release. Useful before upgrades, when checking compatibility requirements or for support requests. Works even if lsb_release is not installed.

Note: On Ubuntu, /etc/debian_version only contains the underlying Debian base (such as trixie/sid). The relevant line there is PRETTY_NAME.

Also searched as

  • check debian version
  • find out os version linux
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  • show ubuntu version

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