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 15.1-STABLE-HBSD       December 2, 2005                       UNAME(3)