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Full Discussion: Multiple scripts in one single script - crontab
Top Forums Shell Programming and Scripting Multiple scripts in one single script - crontab Post 302995515 by Don Cragun on Thursday 6th of April 2017 05:08:48 PM
Old 04-06-2017
If I understand what you are asking correctly, you are saying that you have a variety of cron jobs scheduled separately using crontab. And, instead of having multiple scripts with separate entries in crontab you want to build all of those scripts into a single script that crontab will be used to run that script every minute and then that script will implement all of the features of cron and crontab to run parts of itself at appropriate intervals. If that is what you are trying to do, it sounds like you could spend a LOT of time duplicating the functionality of cron in your script, add overhead to the system and your script, and make it harder to track down issues if your scripts do not work as expected without adding any obvious benefits.

Why would you want to do this? Is it that you want to serialize all of your Nagios scripts so that they will not run concurrently (as they could when scheduled by cron)?
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT DEBIAN

kep_reload

KEP_RELOAD(1)						      General Commands Manual						     KEP_RELOAD(1)

NAME

       kep_reload - Update Predict's Keplerian elements

SYNOPSIS

	kep_reload

DESCRIPTION

       KEP_RELOAD is a simple utility that forces an immediate reload of PREDICT's Keplerian database through a socket connection while PREDICT is
       running in server mode.	It is especially useful in environments where PREDICT runs continuously, and periodic  Keplerian  element  updates
       are made outside of PREDICT, such as through scripts run through a crontab.

       The  "kepupdate"  script  found	in this directory is an example of a Keplerian element update script that can be run on an automated basis
       through a crontab.  It is designed to be placed in your home directory under a subdirectory  called  "cronjobs".   It  downloads  Keplerian
       orbital	data  from  www.celestrak.com  using  the  HTTP  protocol.   (The  "wget" utility, available from the Free Software Foundation, is
       required, and is included in many Linux distrubutions.)

       Type crontab -e to edit your crontab.  Simply add the following entry:

	       0 8 * * * kepupdate

       and your orbital database will update each morning at 8:00 AM (provided you have a network connection at that time).

       See the crontab man page for more information on editing your crontab.

AUTHOR

       This man page was written by A. Maitland Bottoms, AA4HS, for Debian GNU/Linux.

								  31 August 2003						     KEP_RELOAD(1)
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