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Top Forums Shell Programming and Scripting Need to write a shell script that starts one, then kills it, then starts another? Post 302968452 by btramer on Wednesday 9th of March 2016 02:01:43 PM
Old 03-09-2016
Question Need to write a shell script that starts one, then kills it, then starts another?

This is on a CentOS box, I have two scripts that need to run in order.

I want to write a shell script that calls the first script, lets it run and then terminates it after a certain number of hours (that I specify of course), and then calls the second script (they can't run simultaneously) which will self terminate once it's complete.

I'm unsure how to do the middle part, that is terminating the first script after a certain time limit, any suggestions?
 

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SET_TIME_LIMIT(3)							 1							 SET_TIME_LIMIT(3)

set_time_limit - Limits the maximum execution time

SYNOPSIS
bool set_time_limit (int $seconds) DESCRIPTION
Set the number of seconds a script is allowed to run. If this is reached, the script returns a fatal error. The default limit is 30 sec- onds or, if it exists, the max_execution_time value defined in the php.ini. When called, set_time_limit(3) restarts the timeout counter from zero. In other words, if the timeout is the default 30 seconds, and 25 seconds into script execution a call such as set_time_limit(20) is made, the script will run for a total of 45 seconds before timing out. PARAMETERS
o $seconds - The maximum execution time, in seconds. If set to zero, no time limit is imposed. RETURN VALUES
Returns TRUE on success, or FALSE on failure. NOTES
Warning This function has no effect when PHP is running in safe mode. There is no workaround other than turning off safe mode or changing the time limit in the php.ini. Note The set_time_limit(3) function and the configuration directive max_execution_time only affect the execution time of the script itself. Any time spent on activity that happens outside the execution of the script such as system calls using system(3), stream operations, database queries, etc. is not included when determining the maximum time that the script has been running. This is not true on Windows where the measured time is real. SEE ALSO
max_execution_time, max_input_time. PHP Documentation Group SET_TIME_LIMIT(3)
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