DIR

#!/bin/bash

function usage
{
	cat <<- EOF >&2
	Usage: $(basename $0) [DOS flags] directory or directories
	Where:
		/D 	sort by columns
		/H 	show help for this shell script
		/N 	show long listing format with filenames on right
		/OD 	sort by oldest to newest
		/O-D 	sort by newest to oldest
		/P 	pause after each screenful of information
		/Q 	show owner of the file
		/S 	recursive listing
		/W 	use wide listing format
	EOF
	exit 1
}

postcmd=""
flags=""

while [ $# -gt 0 ]
do
	case $1 in
		/D 		) flags="$flags -x"	;;
		/H		) usage			;;
		/[NQW] 	) flags="$flags -l"	;;
		/OD 		) flags="$flags -rt"	;;
		/O-D 		) flags="$flags -t"	;;
		/P 		) postcmd="more"		;;
		/S 		) flags="$flags -s"	;;
			     *) # Unknown flag: probably a DIR specifier break;
				  # so let's get out of the while loop.				     	
  	esac
  	shift			  # Processed flag; let's see if there's another
done

if [ ! -z "$postcmd" ]
then
	ls $flags "$@" | $postcmd
else
	ls $flags "$@"
fi

exit 0