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.

Debian                                            June 23 2020                     UPDATE_LEAP(1update-leapmdoc)