uname

return system name (POSIX)

Syntax:

uname [-amnrsv]

Options:

-a: Behave as if all the options -mnrsv were specified.
-b: Write the OS native word size (bits; 16 or 32), to standard output.
-m: Write the name of the hardware type on which the system is running.
-n: Write the name of this node.
-r: Write the current release level of the operating system (indicated by a number).
-s: Write the name of the operating system.
-v: Write the current version level of this release of the operating system (indicated by a letter).

Examples:

Write the operating system name:

uname

Write a formatted string showing the name, release level, and version level of the operating system:

printf "OS: %s release %s version %s\n" `uname -srv`

Description:

The uname utility writes to standard output information on the name and release of the operating system being run. A portable application may use uname on any POSIX system to determine what operating system it's running under.

When no options are specified, uname writes the operating system name (QNX).

Exit status:

0: Successful completion.
>0: An error occurred.

Caveats:

The sin utility provides more detailed information than uname, but sin is a QNX utility and will not be present on other systems.