WLOCK(1)
NAME
wlock - Tests or sets a file with POSIX-fcntl() write-locks
SYNOPSIS
wlock [ -s [-a seconds ]] [ -t] [ -v] [ -b begin ] [ -l length ] file or wlock [ -s ] [ -v] [ -b begin ] [ -l length ] file program [ arguments ]
DESCRIPTION
This program sets or tests advisory locks conforming to POSIX fcntl()
call. You may specify optionaly a program to start it within the lock
context.
OPTIONS
These options are accepted. If a program is provided as argument wlock
will start it.
-s Sets the lock.
-t Test the lock (default).
-v Verbose output.
- -b begin
- The lock starts at byte #begin.
- -l length
- The lock will be length bytes long.
- -a seconds
- The lock is active for seconds (default=86400).
RETURN VALUES
- 0 In test mode this means that the file is locked. In set mode it
- indicates the succesful creation of the lockfile
- 1 The file is not locked. Only available in testmode.
- 2 Some error has occurred.
AUTHOR
wlock has been written by Ulli Horlacher (framstag@belwue.de>.