lockfile-check(1) on Linux
The text 70f4e3d66d76, as Debian 12 (Bookworm) shipped it.
command-line programs to safely lock and unlock files and mailboxes (via liblockfile).
Flags it lists
-
--lock-name -
--oneshot -
--quiet -
--retry -
--use-pid -
--verbose -
-l -
-o -
-p -
-q -
-r -
-v