Ignore lock files which are inaccessible for the current user.
Use JSON output format.
Do not print a header line.
-o, --output list
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 list is
specified in the format +list (e.g. lslocks -o +BLOCKER).
-p, --pid pid
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.
PID The process ID of the process which holds the lock.
TYPE The type of lock; can be FLOCK (created with flock(2)) or
POSIX (created with fcntl(2) and lockf(3)).
SIZE Size of the locked file.
MODE 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).
M Whether the lock is mandatory; 0 means no (meaning the lock is
only advisory), 1 means yes. (See fcntl(2).)
START Relative byte offset of the lock.
END Ending offset of the lock.
PATH 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 and "..." is appended to the path. The
path might be truncated; use --notruncate to get the full
The PID of the process which blocks the lock.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
email@example.com. This page was obtained from the
project's upstream Git repository
2017-03-13. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to firstname.lastname@example.org
util-linux December 2014 LSLOCKS(8)