lsb release -a

lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.2 LTS
Release:	20.04
Codename:	focal

 lsb_release -a
LSB Version:	:core-4.1-amd64:core-4.1-noarch
Distributor ID:	Amazon
Description:	Amazon Linux release 2 (Karoo)
Release:	2
Codename:	Karoo

Related

• lsb_release -d
• /etc/*release
• /etc/issue
• latest, rolling
• apt update && apt install lsb-release vim sudo -y && lsb_release -a

See also

• Ubuntu, Ubuntu releases, snap, MAAS, PPA, Canonical Livepatch, Ubuntu Advantage, netplan, multipass, Landscape, Subiquity, lsb_release, Ubuntu MATE, Wayland
• Linux distributions: Debian, Ubuntu, RHEL, Amazon Linux, Oracle Linux, ArchLinux, SUSE