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NAME - cron job for Emdebian Grip with a logfile


       /usr/share/emdebian-tools/ [-b] [--base-path] [[--t] |
                                              [--tmpfs]] [[--e] |

DESCRIPTION is a wrapper for cron to automate updates using
       em_autogrip, using a logfile for all output.

       The filter repository is updated against a Debian mirror, updated
       packages are downloaded and gripped, packages that have migrated into
       Debian testing are also migrated into Emdebian Grip testing and
       dependency checks are run.

       Note that can take large amounts of time, temporary disc
       space, CPU and network bandwidth during each run, depending on the
       number of changes in the relevant Debian archives since the last run of Unpacking and repacking Debian binary packages can use a
       tmpfs if already mounted. Ensure that the directory for the tmpfs is
       writeable by the process / user running You may need to
       use sudo mkdir to create a suitable directory in your tmpfs and then
       use sudo chown for the user running  tmpfs will use swap
       space if appropriate but problems can occur if your tmpfs does not
       provide enough space to unpack the larger Debian packages in Grip
       (generally build dependencies) which can be more than 11Mb compressed.

           The top level directory of the Emdebian Grip repository. If your
           filter and grip repositories are in /path/filter/ and /path/grip/,
           the base-path is /path.

           The base-path must always be specified when using

           The path to a writeable directory within an tmpfs which must be
           already mounted.

               Tmpfs will not grow dynamically
               Using a tmpfs could mean that certain packages fail to be
               updated because dpkg -X failed with an error of No space left
               on device. Check the logfiles and enlarge the
               tmpfs before running again.

           Skips the updates and just runs the edos checks for each
           architecture, outputting to the logfile as usual. This is useful
           when just adding and updating packages to fix missing dependencies.

           --tmpfs has no effect in this mode.


       Example 1.1. Example crontab

           0 2 * * * /usr/share/emdebian-tools/ -b /opt/reprepro

       Example 1.2. Example to setup the tmpfs

       The size of the tmpfs is open to debate. A tmpfs can use swap space if
       not enough RAM is available for the contents of the tmpfs but the size
       of the tmpfs itself cannot be changed without unmounting and remounting
       it. i.e. not without restarting Packages that attempt to
       unpack more files than the tmpfs can hold will fail to be updated.
       Check the logs carefully.

           $ cd /opt/reprepro/
           $ mkdir tmpfs
           $ sudo chmod +t tmpfs
           $ sudo chmod 777 tmpfs
           $ sudo mount -t tmpfs -o size=1G,user tmpfs tmpfs/

       crontab for this setup:

           0 2 * * *  /usr/share/emdebian-tools/ -b /opt/reprepro -t /opt/reprepro/tmpfs



       Neil Williams
           Debian and Emdebian developer.


       The GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007.PP This
       documentation is part of emdebian-grip.

       emdebian-grip is free software; you can redistribute it and/or modify
       it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 3 of the License, or (at
       your option) any later version.

       This program is distributed in the hope that it will be useful, but
       WITHOUT ANY WARRANTY; without even the implied warranty of
       General Public License for more details.

       You should have received a copy of the GNU General Public License along
       with this program. If not, see

           In Debian you can find a copy of the GNU General Public Licence in

EMDEBIAN-GRIP Release: 2.Wed 23 Sep 2009 07:57:16 BST