NAME
lockersh - Run a command under a global lock
SYNOPSIS
lockersh [--dhost <host> --port <port>] --lock <name> [args....]DESCRIPTION
Obtain a global IPC::Locker lock with the passed name.
When the lock is granted, run the arguments as a command in the foreground. When the foreground process exits, release the lock, and return the executed command's exit status.
This makes it very easy to insure only one copy of a program executes across a clump:
lockersh --lock one_sleep_runs sleep 10ARGUMENTS
- --dhost host
-
Hostname of lockerd server. Defaults to IPCLOCKER_HOST environment variable.
- --help
-
Displays this message and program version and exits.
- --lock lockname
-
Name for the lock. This argument may be passed multiple times or with a colon separator to allow one of multiple possible locks to be selected.
- --locklist
-
Suppress normal operation, and instead print a list of all outstanding locks and their owners.
- --port port
-
Port of pidstatd server on remote host. Defaults IPCLOCKER_PORT environment variable.
- --timeout
-
Set number of seconds before wait for license will timeout. Defaults to wait forever.
- --verbose
-
Print 'waiting for lock' and similar messages.
ENVIRONMENT
- IPCLOCKER_HOST
-
Hostname of lockerd server. Defaults to localhost.
- IPCLOCKER_PORT
-
Port number of lockerd server. Defaults to 1751.
DISTRIBUTION
The latest version is available from CPAN and from http://www.veripool.com/.
Copyright 2006-2007 by Wilson Snyder. This package is free software; you can redistribute it and/or modify it under the terms of either the GNU Lesser General Public License or the Perl Artistic License.
AUTHORS
Wilson Snyder <wsnyder@wsnyder.org>