System administration

Linux uname command

Print system information. The -a flag requests the available details.

Availability: Common Linux commands; shell built-ins and external implementations may differ by distribution.中文

Syntax

uname [OPTION]...

Examples

Print the available kernel and machine details.

uname -a

Show the kernel release string.

uname -r

Parameters, options and clauses

Option / clause	Description
`-a, --all`	Print all available system information.
`-s, --kernel-name`	Print the kernel name.
`-r, --kernel-release`	Print the kernel release.
`-m, --machine`	Print the hardware machine name.
`-n, --nodename`	Print the network node hostname.
`-o, --operating-system`	Print the operating-system name (where supported).

Safety note

Review a command and its target before running it. Commands that alter files, services, accounts, disks, permissions or databases may be difficult to reverse. Test in a safe environment and keep backups.

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