[Gllug] newbie- shell script

[Tethys]

"Manjush G. Menon" writes:

>I want to write a shell program that takes one or any number of
>file directory names as input; sorts the directory listings of all the
>directories given as parameters jointly in the ascending or
>descending order of choice.

Here you go:

	#!/bin/sh

	prog=`basename "$0"`
	tmpfile="/var/tmp/$prog.$$"

	trap "/bin/rm -f \"$tmpfile\"" 0 INT HUP QUIT TERM

	if [ $1 = "-r" ]
	then
		sortargs=-r
		shift
	fi

	cp /dev/null "$tmpfile"
	for dir in "$@"
	do
		if [ ! -d "$dir" ]
		then
			echo "$prog: $dir is not a directory" 1>&2
			continue
		fi

		(
			cd "$dir"
			ls -1 >> "$tmpfile"
		)
	done

	sort $sortargs "$tmpfile"

Give it a list of arguments, optionally preceded by a "-r" flag to
reverse the sort order.

Tet

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