LOCKERSH(1) User Contributed Perl Documentation LOCKERSH(1)NAMElockersh - Run a command under a global lock
SYNOPSISlockersh [--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 10
ARGUMENTS--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.
--version
Displays program version and exits.
ENVIRONMENT
IPCLOCKER_HOST
Hostname of lockerd server, or colon separated list including
backup servers. 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.org/>.
Copyright 2006-2013 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 Version 3 or the Perl Artistic
License Version 2.0.
AUTHORS
Wilson Snyder <wsnyder@wsnyder.org>
SEE ALSO
IPC::Locker, pidstat, lockersh, uriexec
perl v5.20.2 2013-01-31 LOCKERSH(1)
