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Full Discussion: How to check if another instance of the process is running
Top Forums Shell Programming and Scripting How to check if another instance of the process is running Post 76456 by sim on Tuesday 28th of June 2005 11:23:35 AM
Old 06-28-2005
your assumptions are correct. But i doubt if this will solve my problem because i had problems only when 2 instances of script1 were starting at the same instance (timestamp is same). according to what i understood, in this case also, both the instances can do the ps check and lock file creation at the same time (if file is created using touch command, it will not give any error even if the file exist). and two instances of the script 2 will be started and then the C++ program. Please correct me if i am wrong.
 

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LEARN ABOUT DEBIAN

zorpctl

ZORPCTL(8)							  [FIXME: manual]							ZORPCTL(8)

NAME

       zorpctl_ - Start and stop zorp instances.

SYNOPSIS

       zorpctl command [options [instances/@instance-list-file]]

DESCRIPTION

       zorpctl starts and stops zorp(8) instances based on the contents of the instances.conf(5) file. Multiple instance names can be specified in
       the command-line or in a file to start or stop several instances. If an error occurs while stopping or starting an instance, an exclamation
       mark is appended to the instance name as zorpctl processes the request, and a summary is printed when the program exits. If no instance is
       specified, the command is executed on all instances. The instances to be controlled can be specified in a file instead of listing them in
       the command line, e.g.: zorpctl command options instances.txt. The instances.txt should contain every instance name in a new line.

COMMANDS

       start
	   Starts the specified Zorp instance(s).

       force-start
	   Starts the specified Zorp instance(s) even if they are disabled.

       stop
	   Stops the specified Zorp instance(s).

       force-stop
	   Forces the specified Zorp instance(s) to stop using the KILL signal.

       restart
	   Restart the specified Zorp instance(s).

       force-restart
	   Forces the specified Zorp instance(s) to restart by stopping them using the KILL signal.

       reload
	   Reload the specified Zorp instance(s).

       status
	   Display the status of the specified Zorp instance(s).

	   --verbose or -v
	       Display detailed status information.

       gui-status
	   Display the status of the specified Zorp instance(s) in an internal format easily parsable by ZMC. NOTE: This command is mainly used
	   internally within Zorp, and the structure of its output may change.

       version
	   Display version information on Zorp.

       inclog
	   Raise the verbosity (log) level of the specified Zorp instance(s) by one.

       declog
	   Decrease the verbosity (log) level of the specified Zorp instance(s) by one.

       log
	   Change various log related settings in the specified Zorp instance(s) using the following options:

	   --vinc or -i
	       Increase verbosity level by one.

	   --vdec or -d
	       Decrease verbosity level by one.

	   --vset <verbosity> or -s <verbosity>
	       Set verbosity level to <verbosity>.

	   --log-spec <spec> or -S <spec>
	       Set verbosity mask on a per category basis. The format of this value is described in zorp(8).

	   --help or -h
	       Display this help screen on the options of the log command.

       szig
	   Display internal information from the specified Zorp instance(s). The information to be disblayed can be specified with the following
	   options:

	   --walk or -w
	       Walk the specified tree.

	   --root [node] or -r [node]
	       Set the root node of the walk operation to [node].

	   --help or -h
	       Display a brief help on the options of the szig command.

       help
	   Display a brief help message.

EXAMPLES

       zorpctl start zorp_ftp

       The command above starts the zorp instance named zorp-ftp with parameters described in the instances.conf file.

FILES

       The default location for instances.conf is /etc/zorp/instances.conf.

AUTHOR

       This manual page was written by the BalaBit Documentation Team <documentation@balabit.com>.

COPYRIGHT

       Copyright (C) 2006 BalaBit IT Security Ltd. All rights reserved. For more information about the legal status of this document please read:
       http://www.balabit.com/products/zorp/docs/legal_notice.bbq

[FIXME: source] 						    03/06/2012								ZORPCTL(8)
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