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Top Forums Shell Programming and Scripting Example of running script with time limits? Post 302833853 by newbie_01 on Thursday 18th of July 2013 02:39:00 AM
Old 07-18-2013
Example of running script with time limits?

Hi,

I want to write a script that does some sort of health check on the database. It will query the database for information, some query takes long and some are quick.

For example, inside the script I will do something as below:

Code:
#!/bin/ksh

run_query_01 &
run_query_02 &
run_query_03 &
run_query_04 &

run_query_check_output

...
...

Reason why I want the run_query to run in the background/& is so that the script finishes quickly. I need some guidance though on how do I implement run_query_check_output.

At the moment, I am thinking each run_query in the background will create a .end file before it exits and run_query_check_output will check if this file exists or not, if it exists then the query has finished, if not, check again and wait until it find a .end file.for each run

The other thing I want to be able to check though is to put a time limit of the run of each run_query that I ran in the background. For example, if one runs for more than 15 minutes, I want it to be killed or maybe it can kill itself. Is this possible to implement? Or maybe I should spawn another script that runs in the background too that checks how long each run_query script in the background has been running? How do I check how long each background script has been running so far though? Smilie

Does anyone has an example of what I am wanting to do? Please advise.

Thanks in advance.
 

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INSTALLSIEVE(1) 					      General Commands Manual						   INSTALLSIEVE(1)

 *

NAME
installsieve - user utility for managing sieve scripts SYNOPSIS
installsieve DESCRIPTION
installsieve is a utility that allows users to manage their sieve scripts kept on the server. OPTIONS
-v <name> View script with the given name. The script if retrieved sucessfully is output to standard output. -l List all of the scripts currently on the server. If one of the scripts is active a arrow is printed indicating that it is the active script. -p <port> Port to connect to. If left off this defaults to "sieve" as defined in /etc/services. -i <file> Install a file onto the server. If a script with the same name already exists on the server it is overwritten. Upon sucessfully putting the script on the server the script is set active. If <file> has the extension .script it is chopped when put on the server since sieve names may not contain a '.'. -a <name> Set <name> as the active script. The list of available names can be obtained from the '-l' option.. -d <name> Delete the sieve script on the server with <name>. -m <mechanism> Force installsieve to use <mechanism> for authentication. If not specified the strongest authentication mechanism is chosen. -g <name> Get the sieve script with <name> and save it to disk with a ".script" extension. If a file with that name already exists it is overwritten. -u <user> Userid/Authname to use for authentication; by default, the current user. CMU
Project Cyrus INSTALLSIEVE(1)
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