Bash Quick Start Guide

Providing help output

Consider providing a little help to users of your script if they try running it with a -h or --help option; even a single line showing which arguments are expected and in what order can be very helpful:

case $1 in
    -h|--help)
        printf 'USAGE: myscript [--verbose] FILE1 [FILE2...] TARGETDIR\n'
        ;;
esac

The manual page describing manual pages on GNU/Linux systems, viewable with man man-pages, gives some information on common expected formats for these usage strings.