check_dir is a Nagios plugin to monitor the number of files in one or
more directories.

Usage: check_dir [OPTIONS]

 -?, --usage
   Print usage information
 -h, --help
   Print detailed help screen
 -V, --version
   Print version information
 --extra-opts=[section][@file]
   Read options from an ini file. See http://nagiosplugins.org/extra-opts
   for usage and examples.
 -d, --dir=STRING
   specify the directory (can be repeated)
 -c, --critical=STRING
   specify the critical number (or range) of files
 -w, --warning=STRING
   specify warning threshold (range) for the number of files
 -r, --recursive
   perform recursive traversal (checks individual dirs not the total)
 -t, --timeout=INTEGER
   Seconds before plugin times out (default: 15)
 -v, --verbose
   Show details for command-line debugging (can repeat up to 3 times)