Page Comparison

ls               # example 1 - no options or arguments
ls -l            # example 2 - one "short" (single character) option (-l)
ls --help        # example 3 - one "long" (word) option (--help)
ls .profile      # example 4 - one argument, a file name (.profile)
ls --width=20    # example 5 - a long option that haswith a value (--width is the option, 20 is the value)
ls -w 20         # example 6 - a short option w/a value, as above, where -w is the same as --width
ls -l -a -h      # example 7 - three short options entered separately (-l -a -h)
ls -lah          # example 8 - three short options that can be combined after a dash (-lah)