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Usage: shrink-jpeg [OPTION...] [--] <jpg files>
Use [cd]jpeg to reduce size of jpeg files. If no filenames are given then *.jpg
*.JPG are reduced.
Options:

      --num-cpus=num-of-cpus number of CPUs to use. Default is '8'. Must be of
                             type 'i'. Must be in the range '0-8'.
  -n, --dryrun               dry-run
  -q, --quiet                be quiet
  -v, --verbose              be verbose
  -h, --help                 print this help message
  -V, --version              print version and exit
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