NAME

       update-leap - leap-seconds file manager/updater

SYNOPSIS

       update-leap [-flags] [-flag [value]] [--option-name[[=| ]value]]

       All arguments must be options.

DESCRIPTION

       update-leap will validate the file currently on the local system and if necessary, updates
       leap-second definition file.

       Ordinarily, the file is found using the "leapfile" directive in ntp.conf(5).  However,  an
       alternate location can be specified on the command line.

       If  the  file  does  not exist, is not valid, has expired, or is expiring soon, a new copy
       will be downloaded.  If the new copy validates, it is installed and  NTP  is  (optionally)
       restarted.

       If the current file is acceptable, no download or restart occurs.

       -c  can also be used to invoke another script to perform administrative functions, e.g. to
       copy the file to other local systems.

       This can be run as a cron job.  As the file  is  rarely  updated,  and  leap  seconds  are
       announced  at  least  one  month  in  advance  (usually  longer),  it need not be run more
       frequently than about once every three weeks.

       For cron-friendly behavior, define CRONJOB=1 in the crontab.

       This script depends on$REQUIREDCMDS

OPTIONS

       -s string, --source-url=string
              The URL of the master copy of the leapseconds file.

              Specify the URL of the master copy to download $LEAPSRC

       -4, --ipv4
              Use only IPv4 addresses for DNS name resolution.  This option must  not  appear  in
              combination with any of the following options: ipv6.

                      Force DNS resolution of following host names on the command line
                      to the IPv4 namespace.
                      _EndOfDoc_; };

              flag = {
                  name      = ipv6;
                  flags-cant = ipv4, prefer;
                  value     = 6;
                  descrip   = "Use only IPv6 addresses for DNS name resolution";
                  doc = <<-  _EndOfDoc_
                      Force DNS resolution of following host names on the command line
                      to the IPv6 namespace.
                      _EndOfDoc_; };

              flag = {
                  name        = prefer;
                  flags-cant = ipv4, ipv6;
                  value = p;
                  arg-type    = keyword;
                  keyword    = 4, 6;
                  descrip     = 'Prefer IPv4 or IPv6 (as specified) addresses, but use either';
                  doc         = <<-  _EndOfDoc_ Prefer IPv4 or IPv6 (as specified) addresses, but
              use either.

       -d float, --destination=float
              Filename on the local system.

              The name to use to store the leapfile on the local system.  $LEAPFILE

       -e string, --expiration=string
              Refresh the leapfile this long before it expires.

              Specify how long before expiration the file is to be refreshed Units are  required,
              e.g.  "-e  60  days"   Note  that  larger  values  imply  more  frequent refreshes.
              "$PREFETCH"

       -f string, --ntp-conf-file=string
              Location of the ntp.conf file.

              Specify location of ntp.conf (used to make sure leapfile directive is  present  and
              to default  leapfile) /etc/ntp.conf

       -F, --force-update
              Force update of the leapfile.

              Force update even if current file is OK and not close to expiring.

       --dont-wait
              Don't wait for keystroke between plots.

       -?, --help
              Display usage information and exit.

       -!, --more-help
              Pass the extended usage information through a pager.

       -v [{v|c|n --version [{v|c|n}]}]
              Output  version  of  program  and exit.  The default mode is `v', a simple version.
              The `c' mode will print copyright information and `n' will print the full copyright
              notice.

USAGE

       Usage stuff

EXIT STATUS

       One of the following exit values will be returned:

       0  (EXIT_SUCCESS)
              Successful program execution.

       1  (EXIT_FAILURE)
              The operation failed or the command syntax was not valid.

       70  (EX_SOFTWARE)
              libopts   had  an  internal  operational  error.   Please  report  it  to  autogen-
              users@lists.sourceforge.net.  Thank you.

AUTHORS

       Timothe Litt

NOTES

       This manual page was AutoGen-erated from the update-leap option definitions.