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delayed-shutdown
----------------

Initscript that delays the shutdown procedure as long as a predefined
lockfile (no-shutdown lockfile) exists. The no-shutdown lockfile should be set
whenever a running process, for instance a backup script, should not be
interrupted by a system shutdown or reboot. When started, this script has no
impact on system performance.


Manual Installation:

As user 'root' follow the instructions to install the file in your initscripts
directory:

  cp delayed-shutdown /etc/init.d/
  chmod +x /etc/init.d/delayed-shutdown

For RedHat and relatives run:

  chkconfig --add delayed-shutdown

For Debian and relatives run:

  update-rc.d delayed-shutdown defaults


Manual De-installation:

If for any reason you need to remove 'delayed-shutdown' from your system do
the following:

For RedHat and relatives run:

  chkconfig --del delayed-shutdown

For Debian and relatives run:

  update-rc.d -f delayed-shutdown remove

Delete the initscript:

  rm /etc/init.d/delayed-shutdown


Usage:

In order to delay the shutdown process until your software finishes its
operation, you should create the no-shutdown lock file:

         /var/lock/noshutdown.lock

Then let your software do its job and, when finished, delete the no-shutdown
lock file. In case of a script that would be:

     lockfile /var/lock/noshutdown.lock
     ... [script is working] ...
     rm -f /var/lock/noshutdown.lock

See the included example script 'test.sh'.


Feedback: http://www.g-loaded.eu/forums/

Released under the terms of the MIT license:

Copyright (c) 2008 George Notaras <gnot [at] g-loaded.eu>, CodeTRAX.org

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.