Provided by: ruby-lockfile_2.1.3-1_all 
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.
AUTHOR
lockfile was written by Ara T. Howard <ara.t.howard@noaa.gov>. This manual page was converted by Decklin Foster <decklin@red-bean.com> for the Debian project (but may be used by others). 2008-10-11 RLOCK(1)