Name
gethostid, sethostid — get or set the unique
identifier of the current host
Synopsis
int
sethostid( |
long |
hostid) ; |
DESCRIPTION
Get or set a unique 32-bit identifier for the current
machine. The 32-bit identifier is intended to be unique among
all UNIX systems in existence. This normally resembles the
Internet address for the local machine, as returned by
gethostbyname(3), and thus
usually never needs to be set.
The sethostid
() call is
restricted to the superuser.
The hostid
argument is stored in the file /etc/hostid
.
RETURN VALUE
gethostid
() returns the
32-bit identifier for the current host as set by sethostid(2).
CONFORMING TO
4.2BSD; these functions were dropped in 4.4BSD. SVr4
includes gethostid
() but not
sethostid
(). POSIX.1-2001
specifies gethostid
() but not
sethostid
().
SEE ALSO
hostid(1), gethostbyname(3)
Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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Updated with additions from Mitchum DSouza <m.dsouza@mrc-apu.cam.ac.uk>
Portions Copyright 1993 Mitchum DSouza <m.dsouza@mrc-apu.cam.ac.uk>
Modified Tue Oct 22 00:22:35 EDT 1996 by Eric S. Raymond <esr@thyrsus.com>
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