:: Software :: trigger

The trigger-wait Program

Usage

Description

The trigger-wait listens for input on the fifo path and simultaneously executes prog, if present. It optionally waits for prog to complete and exits 0 if it received a trigger pull and 99 otherwise.

Options

• -t timeout: Wait at most timeout seconds for a trigger pull. If timeout seconds elapse without a trigger pull, then trigger-listen pulls its own trigger. The default value of timeout is (unsigned int)~0.
• -w: (default) Wait for prog to complete.
• -W: Do not wait for prog to complete.
• -d: (default) Delete. Remove and recreate the fifo path upon startup.
• -D: No delete. Do not remove and recreate path upon startup.

Errors

The trigger-wait program exits 100 for permanent errors and 111 for temporary errors.