This is the command rlock that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
rlock - run program with a lockfile
SYNOPSIS
rlock [options] lockfile program [args]
rlock [options] lockfile -- program options [args]
DESCRIPTION
rlock creates NFS safe lockfiles. it can optionally run a program while holding the lock,
ensuring lockfile removal on program exit. if a program is specified to be run rlock will
spawn a background thread to kept the lockfile 'fresh' by touching it at a regular
interval. in this way a lease is maintained on the lockfile and other processes
attempting to obtain the lock can determine that it is in use. see the '--refresh' option
for how to control the touch interval. any other process trying to obtain a lock will
automatically remove a stale lockfile; a stale lockfile is one that is older than a
certain age. this age be controled via the '--max_age' option.
ENVIRONMENT
LOCKFILE_DEBUG=1
causes internal actions of the library to be shown on STDERR.
DIAGNOSTICS
rlock attempts to exit with the status of 'program' except where it cannot due to
exceptional conditions. in addition the message
'RLOCK SUBCOMMAND FAILURE'
will be printed on STDERR if 'program' exits with non-zero status.
Use rlock online using onworks.net services
