# usage : utility NEW_DIRECTORY -- user : I think not
    #
    trap 'cleanup' INT HUP TERM
    cleanup() { rm -rf "${mydir}" ;}
    
    # stuff
    mydir="${HOME}/$1" # but $1 is empty
    if test -z "$1"; then
        # handle; but while stuff is happening,
        # user presses Ctrl-C
    fi