branches: 1.1.2; 1.1.4; 1.1.6;
Add an flock program inspired by the linux one with the same name.

Undo the confusion. Use separate synopsis lines for -c command with
single argument (sh -c) and command [args ...] forms.

The command is not optional.

Tweak formatting.

branches: 1.10.16;
mention that -x is the default.

branches: 1.9.4;
flock(1) really appeared first in NetBSD 6.1

branches: 1.8.2; 1.8.4; 1.8.6;
Separate SEE ALSO entries with comma.

cross reference shlock(1)

we don't truncate seconds anymore.

Use longer -c description.

Sort options and their descriptions. Sync usage with man page.

treat a command without -c like an argument vector
default to exclusive lock

fix usage

Add an flock program inspired by the linux one with the same name.

fix a bug gcc 8 picked up: use ~LOCK_NB to look for LOCK_UN,
like the rest of the code does.

from uwe@.

branches: 1.11.16;
remove XXX, fix error message

make this behave like linux; make -x the default

branches: 1.9.4;
Annotate functions using format strings.

PR/48351: Dennis Ferguson: Fix incorrect parsing of flock flags.
XXX: still flock -s 0 fails with EINVAL, why?

Don't crash if "flock" is used to lock a file descriptor e.g. via
"flock --nb 8".

branches: 1.6.2; 1.6.4; 1.6.6;
- better usage messages
- verbose can be local
- add static

- use modern timer functions to handler fractional wait
- add a function to print the full command line
- use sigaction so signals interrupt us

Use longer -c description.

Sort options and their descriptions. Sync usage with man page.

treat a command without -c like an argument vector
default to exclusive lock

Add an flock program inspired by the linux one with the same name.