centos man page for gethostname

GETHOSTNAME(3P) 					     POSIX Programmer's Manual						   GETHOSTNAME(3P)

PROLOG
       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME
       gethostname - get name of current host

SYNOPSIS
       #include <unistd.h>

       int gethostname(char *name, size_t namelen);

DESCRIPTION
       The gethostname() function shall return the standard host name for the current machine. The namelen argument shall specify the size of  the
       array  pointed  to  by  the name argument.  The returned name shall be null-terminated, except that if namelen is an insufficient length to
       hold the host name, then the returned name shall be truncated and it is unspecified whether the returned name is null-terminated.

       Host names are limited to {HOST_NAME_MAX} bytes.

RETURN VALUE
       Upon successful completion, 0 shall be returned; otherwise, -1 shall be returned.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       gethostid(), uname(), the Base Definitions volume of IEEE Std 1003.1-2001, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and  the  original  IEEE
       and  The  Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
       online at http://www.opengroup.org/unix/online.html .

IEEE
/The Open Group						       2003							   GETHOSTNAME(3P)