Mount removable drives in a quick and flexible way from the command line

pmtw.sh

#! /bin/sh -Cefu

. /usr/local/bin/fortify.sh
. /usr/local/bin/mashlib.sh

MODE=name

usage()
{
    echo 'usage: pmtw ( NAME | -u UUID | -l LABEL | -p PARTITION )' >&2
    exit 2
}

rc_lookup()
{
    grep -v -e '^ *$' -e '^ *#' $(conc $HOME /.pmtwrc) | \
        awk -v name=${NAME} '$1 == name {print $2 " " $3 " " $4}' | \
        head -n 1
}

while getopts :ulp opt ; do
    case $opt in
        (u)
            MODE=uuid
            break
            ;;
        (l)
            MODE=label
            break
            ;;
        (p)
            MODE=partition
            break
            ;;
        ('?')
            usage
            ;;
    esac
done

shift $(( OPTIND - 1 ))
case $# in
    (1)
        true
        ;;
    (*)
        usage
        ;;
esac

NAME=$1

case $MODE in
    (partition)
        pmount $(conc /dev/ $NAME) $NAME
        ;;
    (uuid)
        pmount $(conc /dev/disk/by-uuid/ $NAME) $NAME
        ;;
    (label)
        pmount $(conc /dev/disk/by-label/ $NAME) $NAME
        ;;
    (name)
        ifson ; set -- $(rc_lookup) ; ifsoff
        case $# in
            (3)
                true
                ;;
            (*)
                echo "${NAME} not found, or bad config" >&2
                exit 1
                ;;
        esac
        pmount -t $3 $(conc /dev/disk/by- $1 / $2) $NAME
esac