21.2 uname: Print system information

uname prints information about the machine and operating system it is run on. If no options are given, uname acts as if the -s option were given. Synopsis:

uname [option]...

If multiple options or -a are given, the selected information is printed in this order:

kernel-name nodename kernel-release kernel-version machine processor hardware-platform operating-system

The information may contain internal spaces, so such output cannot be parsed reliably. In the following example, release is `2.2.18ss.e820-bda652a #4 SMP Tue Jun 5 11:24:08 PDT 2001':

uname -a => Linux dum 2.2.18ss.e820-bda652a #4 SMP Tue Jun 5 11:24:08 PDT 2001 i686 unknown unknown GNU/Linux

The program accepts the following options. Also see 2. Common options.

`-a'

`--all'

Print all of the below information.

`-i'

`--hardware-platform'

Print the hardware platform name (sometimes called the hardware implementation).

`-m'

`--machine'

Print the machine hardware name (sometimes called the hardware class).

`-n'

`--nodename'

Print the network node hostname.

`-p'

`--processor'

Print the processor type (sometimes called the instruction set architecture or ISA).

`-o'

`--operating-system'

Print the name of the operating system.

`-r'

`--kernel-release'

Print the kernel release.

`-s'

`--kernel-name'

Print the kernel name.

`-v'

`--kernel-version'

Print the kernel version.