tail head cat sleep
QR code linking to this page

Manual Pages  — GETHOSTID

NAME

gethostid, sethostid – get/set unique identifier of current host

CONTENTS

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <unistd.h>

long
gethostid(void);

void
sethostid(long hostid);

DESCRIPTION

The sethostid() function establishes a 32-bit identifier for the current processor that is intended to be unique among all UNIX systems in existence. This is normally a DARPA Internet address for the local machine. This call is allowed only to the super-user and is normally performed at boot time.

The gethostid() function returns the 32-bit identifier for the current processor.

This function has been deprecated. The hostid should be set or retrieved by use of sysctl(3).

SEE ALSO

gethostname(3), sysctl(3), sysctl(8)

HISTORY

The gethostid() and sethostid() syscalls appeared in BSD 4.2 and were dropped in BSD 4.4 .

BUGS

32 bits for the identifier is too small.

GETHOSTID (3) June 2, 1993

tail head cat sleep
QR code linking to this page


Please direct any comments about this manual page service to Ben Bullock. Privacy policy.