lslocks — list local system locks
Use JSON output format.
Do not print a header line.
Specify which output columns to print. Use
−−help to get a
list of all supported columns.
The default list of columns may be extended if
specified in the format
Display only the locks held by the process with this pid.
Use the raw output format.
Do not truncate text in columns.
Display version information and exit.
Display help text and exit.
The command name of the process holding the lock.
The process ID of the process which holds the lock.
Size of the locked file.
The lock's access permissions (read, write). If the process is blocked and waiting for the lock, then the mode is postfixed with an '*' (asterisk).
Whether the lock is mandatory; 0 means no (meaning the lock is only advisory), 1 means yes. (See fcntl(2).)
Relative byte offset of the lock.
Ending offset of the lock.
Full path of the lock. If none is found, or there
are no permissions to read the path, it will fall back
to the device's mountpoint. The path might be
−−notruncate to get the
The PID of the process which blocks the lock.
The lslocks command is meant to replace the lslk(8) command, originally written by Victor A. Abell <email@example.com> and unmaintained since 2001.