UNAME(3)               FreeBSD Library Functions Manual               UNAME(3)

NAME
     uname - get system identification

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <sys/utsname.h>

     int
     uname(struct utsname *name);

DESCRIPTION
     The uname() function stores NUL-terminated strings of information
     identifying the current system into the structure referenced by name.

     The utsname structure is defined in the <sys/utsname.h> header file, and
     contains the following members:

           sysname       Name of the operating system implementation.

           nodename      Network name of this machine.

           release       Release level of the operating system.

           version       Version level of the operating system.

           machine       Machine hardware platform.

RETURN VALUES
     The uname() function returns the value 0 if successful; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.

ENVIRONMENT
     UNAME_s      If the environment variable UNAME_s is set, it will override
                  the sysname member.

     UNAME_r      If the environment variable UNAME_r is set, it will override
                  the release member.

     UNAME_v      If the environment variable UNAME_v is set, it will override
                  the version member.

     UNAME_m      If the environment variable UNAME_m is set, it will override
                  the machine member.

ERRORS
     The uname() function may fail and set errno for any of the errors
     specified for the library functions sysctl(3).

SEE ALSO
     uname(1), sysctl(3)

STANDARDS
     The uname() function conforms to IEEE Std 1003.1-1988 ("POSIX.1").

HISTORY
     The uname() function first appeared in 4.4BSD.

FreeBSD 13.1-RELEASE-p6        December 2, 2005        FreeBSD 13.1-RELEASE-p6