uname(3) - NetBSD Manual Pages

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UNAME(3)                NetBSD 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 identi-
     fying 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.  Equiva-
                         lent to the sysctl(7) kern.ostype variable.

           nodename      Network name of this machine.  Equivalent to the
                         sysctl(7) kern.hostname variable.

           release       Release level of the operating system.  Equivalent to
                         the sysctl(7) kern.osrelease variable.

           version       Version level of the operating system.  Equivalent to
                         the sysctl(7) kern.version variable, except that very
                         long values are truncated, and newlines are converted
                         to spaces.

           machine       Machine hardware platform.  Equivalent to the
                         sysctl(7) hw.machine variable.


RETURN VALUES

     If uname is successful, 0 is returned, otherwise, -1 is returned and
     errno is set appropriately.


ERRORS

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


SEE ALSO

     uname(1), sysctl(3)


STANDARDS

     The uname() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1'').


HISTORY

     The uname function first appeared in 4.4BSD.

NetBSD 8.0                       June 14, 2014                      NetBSD 8.0