wlock1
Tests or sets a file with posix-fcntl() write-locks
Usage
wlock [-s
[-a
seconds]]
[-t]
[-v]
[-b
begin]
[-l
length]
file
or
wlock [-s]
[-v]
[-b
begin]
[-l
length]
file
program
[arguments]
Overview
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.
History
- Debian 12 (Bookworm) to Debian 2.2 (Potato): the text shown here
- Debian 2.1 (Slink) to Debian 2.0 (Hamm)