View source for Units (command)

==Usage==
 units [option] ['from-unit' 'to-unit']

    -h, --help          print this help and exit
    -c, --check         check that all units reduce to primitive units
        --check-verbose like --check, but lists units as they are checked
                          so you can find units that cause endless loops
    -e, --exponential   exponential format output
    -f, --file          specify units data files (-f '' loads default file)
    -m, --minus         make - into a subtraction operator (default)
    -o, --output-format specify printf numeric output format
    -p, --product       make - into a product operator
    -q, --quiet         supress prompting
        --silent        same as --quiet
    -s, --strict        suppress reciprocal unit conversion (e.g. Hz<->s)
    -t, --terse         print terse conversion factor output
    -v, --verbose       print slightly more verbose output
    -V, --version       print version number and exit