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Top Forums Shell Programming and Scripting Exit while loop on execute script Post 302900758 by Scrutinizer on Thursday 8th of May 2014 01:35:40 PM
Old 05-08-2014
You could use a trap command, for example..
Code:
trap 'reset_counter' ALRM
reset_counter() {
  time_delay=10
}
reset_counter
until [ $time_delay -eq 0 ]
do
  sleep 1
  time_delay=$((time_delay-1))
done
echo "timer expired"

Now every time you send a kill -ALRM to the subprocess the counter is reset..

Last edited by Scrutinizer; 05-08-2014 at 02:57 PM..
 

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RUNALARM(1)						      General Commands Manual						       RUNALARM(1)

NAME
runalarm - enforce a time limit on execution of a process SYNOPSYS
runalarm [ -h ] runalarm [ -d ] [ -t timeout ] command [ args ] DESCRIPTION
runalarm tries to execute a command and, if the subprocess does not exit before a timer expires, tries to terminate that subprocess. Oth- erwise, the exit status of the command is returned. USAGE
-d Debug mode; send log messages to standard error as well as to the system log. -t timeout Specifies the duration, in seconds, for runalarm to allow the command to run. The default is 1d duration (86400 seconds). -h Prints some basic help. BUGS
Sending SIGALRM to runalarm before the timer has expired will cause the subprocess to be killed. SEE ALSO
runlock(1), runstat(1) AUTHOR
runalarm was written by Jamie Wilkinson <jaq@google.com>, based on some Python code by Craig Silverstein COPYRIGHT
This program is copyright (C) 2000-2010 Google, Inc. It is licensed under the Apache License, Version 2.0 Google, Inc. October 18, 2010 RUNALARM(1)
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