uname

wikipedia:Uname

uname -a
Linux ip-172-31-59-210.ec2.internal 4.14.246-187.474.amzn2.aarch64 #1 SMP Tue Sep 7 21:48:09 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux

uname -a
Linux 273cf4bc19df 5.10.76-linuxkit #1 SMP PREEMPT Mon Nov 8 11:22:26 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux

Architecture:

uname -m
aarch64

os="$(uname | awk '{print tolower($0)}')"

Related

• winver
• /etc/os-release
• /etc/*release

See also

• lsb_release, lsb_release --help, lsb_release -cs, /etc/*release, /etc/issue, hostnamectl, uname
• uname, uname -m, lsb_release, hostnamectl, sw_vers (macOS), winver, ver, busybox