logprn

logprn logfile idle-time[:max-wait] command

The logprn program is designed to print new data that is appended to log files. It will wait until a specified amount of time has elapsed since the last write to the file before printing the data. It will print the data by pipeing it to a specified command. The command will be run by popen(3) so the usual shell commands will operate (whether this is a bug or a feature is a matter of opinion).

logfile

specifies a file to read data from. It should be a regular file not a pipe, device, or anything else.

idle-time

max-wait

command

0 Never happens, this program will run forever.

1 Bad command-line parameters or couldn't stat the log file on startup - couldn't start the program.

2 File disappeared or became unreadable at run-time.

3 Can't run the specified command.

This program, its manual page, and the Debian package were written by Russell Coker <russell@coker.com.au>.

Uses popen (3) but I consider this a feature not a bug.

popen(3)