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PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT |
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GETHOSTNAME(3P) POSIX Programmer's Manual GETHOSTNAME(3P)
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the
corresponding Linux manual page for details of Linux behavior), or
the interface may not be implemented on Linux.
gethostname — get name of current host
#include <unistd.h>
int gethostname(char *name, size_t namelen);
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.
Upon successful completion, 0 shall be returned; otherwise, −1 shall
be returned.
No errors are defined.
The following sections are informative.
None.
None.
None.
None.
gethostid(3p), uname(3p)
The Base Definitions volume of POSIX.1‐2008, unistd.h(0p)
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information
Technology -- Portable Operating System Interface (POSIX), The Open
Group Base Specifications Issue 7, Copyright (C) 2013 by the
Institute of Electrical and Electronics Engineers, Inc and The Open
Group. (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
applied.) 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.unix.org/online.html .
Any typographical or formatting errors that appear in this page are
most likely to have been introduced during the conversion of the
source files to man page format. To report such errors, see
https://www.kernel.org/doc/man-pages/reporting_bugs.html .
IEEE/The Open Group 2013 GETHOSTNAME(3P)
Pages that refer to this page: unistd.h(0p)
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