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UNAME(1)		FreeBSD	General	Commands Manual		      UNAME(1)

NAME
     uname -- display information about	the system

SYNOPSIS
     uname [-abiKmnoprsUv]

DESCRIPTION
     The uname command writes the name of the operating	system implementation
     to	standard output.  When options are specified, strings representing one
     or	more system characteristics are	written	to standard output.

     The options are as	follows:

     -a	     Behave as though the options -m, -n, -r, -s, and -v were speci-
	     fied.

     -b	     Write the kernel's	linker-generated build-id to standard output.

     -i	     Write the kernel ident to standard	output.

     -K	     Write the FreeBSD version of the kernel.

     -m	     Write the type of the current hardware platform to	standard out-
	     put.  (make(1) uses it to set the MACHINE variable.)

     -n	     Write the name of the system to standard output.

     -o	     This is a synonym for the -s option, for compatibility with other
	     systems.

     -p	     Write the type of the machine processor architecture to standard
	     output.  (make(1) uses it to set the MACHINE_ARCH variable.)

     -r	     Write the current release level of	the operating system to	stan-
	     dard output.

     -s	     Write the name of the operating system implementation to standard
	     output.

     -U	     Write the FreeBSD version of the user environment.

     -v	     Write the version level of	this release of	the operating system
	     to	standard output.

     If	the -a flag is specified, or multiple flags are	specified, all output
     is	written	on a single line, separated by spaces.

     The -K and	-U flags are intended to be used for fine grain	differentia-
     tion of incremental FreeBSD development and user visible changes.	Note
     that when both of these two options are specified,	regardless of their
     order, the	kernel version would be	printed	first, followed	by the user
     environment version.

ENVIRONMENT
     An	environment variable composed of the string UNAME_ followed by any
     flag to the uname utility (except for -a) will allow the corresponding
     data to be	set to the contents of the environment variable.  See uname(3)
     for more information.

EXIT STATUS
     The uname utility exits 0 on success, and >0 if an	error occurs.

EXAMPLES
     The hardware platform (-m)	can be different from the machine's processor
     architecture (-p),	e.g., on 64-bit	PowerPC, -m would return powerpc and
     -p	would return powerpc64.

SEE ALSO
     feature_present(3), getosreldate(3), sysctl(3), uname(3), sysctl(8)

STANDARDS
     The uname command is expected to conform to the IEEE Std 1003.2
     ("POSIX.2") specification.

HISTORY
     The uname command appeared	in PWB UNIX 1.0, however 4.4BSD	was the	first
     Berkeley release with the uname command.

     The -K and	-U extension flags appeared in FreeBSD 10.0.  The -b extension
     flag appeared in FreeBSD 13.0.

FreeBSD	13.0		       November	13, 2020		  FreeBSD 13.0

NAME | SYNOPSIS | DESCRIPTION | ENVIRONMENT | EXIT STATUS | EXAMPLES | SEE ALSO | STANDARDS | HISTORY

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