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RedHat 9 (Linux i386) - man page for gethostid (redhat section 2)

GETHOSTID(2)			    Linux Programmer's Manual			     GETHOSTID(2)

NAME
       gethostid, sethostid - get or set the unique identifier of the current host

SYNOPSIS
       #include <unistd.h>

       long gethostid(void);
       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.  POSIX.1 does not define these functions,
       but  ISO/IEC  9945-1:1990  mentions  them  in  B.4.4.1.	 SVr4  includes gethostid but not
       sethostid.

FILES
       /etc/hostid

SEE ALSO
       hostid(1), gethostbyname(3)

Linux 0.99.13				    1993-11-29				     GETHOSTID(2)


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