I have added some features to aplay to make audio surveillance easier: --process-id-file writes the PID to a file so another program can signal aplay to close its capture file and open another one without missing any sound. --max-file-time causes the close and re-open to happen automatically. --use-strftime allows capture files to be named for their start times. Details are in the man file.

For ease of review, this patch is divided into three parts. Part 1 is just --process-id-file, which is intrusive because it must intercept the exit points to delete the file. Part 2 is the remainder of the new features in aplay.c. Part 3 updates the man file. John Sauter (John_Sauter@systemeyescomputerstore.com)