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Shell Programming and Scripting
Xterm using python subprocess
Post 302841101 by wisecracker on Wednesday 7th of August 2013 02:44:04 AM
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LEARN ABOUT DEBIAN
runlock
RUNLOCK(1) General Commands Manual RUNLOCK(1) NAME
runlock - prevent concurrent execution of a process SYNOPSYS
runlock [ -h ] runlock [ -d ] [ -f pathname ] [ -t timeout ] command [ args ] DESCRIPTION
runlock tries to hold an exclusive lock while it executes a command. Subsequent execution of runlock with the same lock, while that lock is held, will cause the new instance of runlock to terminate with a faliure exit code. Otherwise, the exit code of the subprocess is returned. USAGE
-d Debug mode; send log messages to standard error as well as to the system log. -f pathname Specifies the pathname of the file to use as a lock file. The default is to create a lock file in /tmp/cronutils-$USER with the name of the command, and suffix ".pid". -t timeout Specifies the duration, in seconds, for runlock to wait before giving up on trying to acquire the lock. The default is 5 seconds. -h Prints some basic help. BUGS
Sending SIGALRM to runlock before the timer has expired will cause the subprocess to be killed. SEE ALSO
runalarm(1), runstat(1) AUTHOR
runlock was written by Jamie Wilkinson <jaq@google.com>. COPYRIGHT
This program is copyright (C) 2010 Google, Inc. It is licensed under the Apache License, Version 2.0 Google, Inc. October 18, 2010 RUNLOCK(1)