NAME

     zgenhostid — generate host ID into /etc/hostid

SYNOPSIS

     zgenhostid [-f] [-o filename] [hostid]

DESCRIPTION

     Creates /etc/hostid file and stores the host ID in it.  If hostid was provided, validate and
     store that value.  Otherwise, randomly generate an ID.

OPTIONS

     -h           Display a summary of the command-line options.

     -f           Allow output overwrite.

     -o filename  Write to filename instead of the default /etc/hostid.

     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 0, generate a random ID.  This value must be
                  unique among your systems.  It must be an 8-digit-long hexadecimal number,
                  optionally prefixed by "0x".

FILES

     /etc/hostid

EXAMPLES

     Generate a random hostid and store it
               # zgenhostid

     Record the libc-generated hostid in /etc/hostid
               # zgenhostid "$(hostid)"

     Record a custom hostid (0xdeadbeef) in /etc/hostid
               # zgenhostid deadbeef

     Record a custom hostid (0x01234567) in /tmp/hostid and overwrite the file if it exists
               # zgenhostid -f -o /tmp/hostid 0x01234567

SEE ALSO

     genhostid(1), hostid(1), sethostid(3), spl(4)

HISTORY

     zgenhostid emulates the genhostid(1) utility and is provided for use on systems which do not
     include the utility or do not provide the sethostid(3) function.