NAME¶
zgenhostid
—
generate and store a hostid in
/etc/hostid
SYNOPSIS¶
zgenhostid |
[-f ] [-o
filename] [hostid] |
DESCRIPTION¶
Creates /etc/hostid file and stores hostid in it. If the
user provides [hostid] on the command line, validates
and stores that value. Otherwise, randomly generates a value to store.
-h
- Display a summary of the command-line options.
-f
- Force file overwrite.
-o
filename
- Write to filename instead of default
/etc/hostd
- hostid
- Specifies the value to be placed in /etc/hostid.
It should be a number with a value between 1 and 2^32-1. If it is 0,
zgenhostid will generate a random hostid. This value
must be unique among your systems. It
must be expressed in hexadecimal and be exactly
8 digits long, optionally prefixed by
0x.
EXAMPLES¶
- Generate a random hostid and store it
-
- Record the libc-generated hostid in
/etc/hostid
-
- Record a custom hostid (0xdeadbeef) in
/etc/hostid
-
- Record a custom hostid (0x01234567) in
/tmp/hostid
- and ovewrite the file if it exists
# zgenhostid -f -o /tmp/hostid 0x01234567
HISTORY¶
zgenhostid
emulates the genhostid(1)
utility and is provided for use on systems which do not include the utility or
do not provide sethostid(3) call.