The config-package-dev package makes it easy to create a Debian package that contains a cron configuration file.
In this case I will create a cron file for the logcheck program. This program will be a Pre-Depends so that it is installed and configured before installing the package with the logcheck configuration in cron.
Install logcheck:
apt-get install logcheckThe cron file for logcheck will contain the following:
# /etc/cron.d/logcheck: crontab entries for the logcheck package
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
@reboot logcheckif [ -x /usr/sbin/logcheck ]; then nice -n10 /usr/sbin/logcheck -R; fi
* * * * * logcheckif [ -x /usr/sbin/logcheck ]; then nice -n10 /usr/sbin/logcheck; fi
# EOF##Procedure to create the package:
1. Create the working directory and the Debian directory
mkdir -p canaima-cron-logcheck-0.1
mkdir -p canaima-cron-logcheck-0.1/debian2. Create the debian/changelog file.
canaima-cron-logcheck (0.1) unstable; urgency=low
* Initial release.
-- Ernesto Nadir Crespo Avila <ecrespo@gmail.com> Mon, 14 Nov 2011 21:48:20 -04303. Create the compat file with the value 7.
4. Create the control and control.in files with the following:
logcheck is set as a pre-dependency, and the standar version is set to 3.9.2.
Source: canaima-cron-logcheck
Section: config
Priority: extra
Maintainer: Ernesto Nadir Crespo Avila <ecrespo@gmail.com>
Build-Depends: cdbs (>= 0.4.23-1.1), debhelper (>= 4.2.0), config-package-dev (>= 4.5~)
Standards-Version: 3.9.2
Package: canaima-cron-logcheck
Architecture: all
Depends: cdbs, ${misc:Depends}
Pre-Depends: logcheck
Provides: ${diverted-files}
Conflicts: ${diverted-files}
Description: Configuracion de cron para logcheck
Configuracion de cron para logcheck.5. Create the debian/copyright file:
The package author is kept because the config-package-dev cron example for logcheck is being used as is.
canaima-cron-logcheck.
Example config-package-dev package.
Author: Tim Abbott <tabbott@mit.edu>
Copyright © 2008 Tim Abbott <tabbott@mit.edu>
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.6. Create the debian/canaima-cron-logcheck.cron.d file with the cron contents for logcheck:
# /etc/cron.d/logcheck: crontab entries for the logcheck package
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
@reboot logcheckif [ -x /usr/sbin/logcheck ]; then nice -n10 /usr/sbin/logcheck -R; fi
* * * * * logcheckif [ -x /usr/sbin/logcheck ]; then nice -n10 /usr/sbin/logcheck; fi
# EOF7. Create the debian/rules file with the following contents:
#!/usr/bin/make -f
DEB_DIVERT_EXTENSION = .canaima
# This will remove /etc/cron.d/logcheck
DEB_REMOVE_FILES_canaima-cron-logcheck += \
/etc/cron.d/logcheck
# We will install (using dh_installcron, by placing the new cron job
# at debian/canaima-cron-logcheck.cron.d) a new version that runs
# every minute, rather than every 30 minutes. This will generate a
# lot of mail. Note that we cannot install a new file to the path
# /etc/cron.d/logcheck from which a file was removed using
# DEB_REMOVE_FILES.
include /usr/share/cdbs/1/rules/debhelper.mk
include /usr/share/cdbs/1/rules/config-package.mk8. Add execute permission to the debian/rules file:
chmod a+x debian/rules9. In the end you have the following files:
ecrespo@jewel:~/canaima/canaima-cron-logcheck-0.1$ ls -l debian/
total 28
-rw-r--r-- 1 ecrespo ecrespo 347 nov 14 22:02 canaima-cron-logcheck.cron.d
-rw-r--r-- 1 ecrespo ecrespo 157 nov 14 21:50 changelog
-rw-r--r-- 1 ecrespo ecrespo2 nov 14 21:50 compat
-rw-r--r-- 1 ecrespo ecrespo 481 nov 14 21:55 control
-rw-r--r-- 1 ecrespo ecrespo 481 nov 14 21:55 control.in
-rw-r--r-- 1 ecrespo ecrespo 1169 nov 14 22:01 copyright
-rwxr-xr-x 1 ecrespo ecrespo 612 nov 14 22:06 rules10. Build and sign the canaima-cron-logcheck-0.1 package:
dpkg-buildpackage -rfakeroot -kC97E701511. In the end the following files are created:
ls -l canaima-cron-logcheck*
-rw-r--r-- 1 ecrespo ecrespo 2902 nov 14 22:08 canaima-cron-logcheck_0.1_all.deb
-rw-r--r-- 1 ecrespo ecrespo 876 nov 14 22:08 canaima-cron-logcheck_0.1.dsc
-rw-r--r-- 1 ecrespo ecrespo 1551 nov 14 22:09 canaima-cron-logcheck_0.1_i386.changes
-rw-r--r-- 1 ecrespo ecrespo 1807 nov 14 22:08 canaima-cron-logcheck_0.1.tar.gz12. Check whether the package complies with Debian policy using lintian:
lintian -i canaima-cron-logcheck_0.1.dsc13. Install the package:
dpkg -i canaima-cron-logcheck_0.1_all.deb14. The cron file is now installed:
ls -l /etc/cron.d
total 12
-rw-r--r-- 1 root root 244 nov 1 2009 anacron
-rw-r--r-- 1 root root 347 nov 14 22:08 canaima-cron-logcheck
-rw-r--r-- 1 root root 544 sep 13 05:59 php5Make a donation! If you liked the article you can make a donation in Bitcoin (BTC) using the digital wallet of your choice to the following address: 17MtNybhdkA9GV3UNS6BTwPcuhjXoPrSzV
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