#!/bin/sh

a=60
n=

help() {
        cat <<EOF
Usage:  `basename "$0"` -h | [-i|-n] [-a AGE] DIR [DIR [...]]
Looks for all files in DIR/archive, which are older than AGE and removes these.
-a AGE	Maximal age of file in days to hold (std: $a).
-n	Dummy mode. Shows files to remove, if not in dummy mode.
-i	Asks to remove (see also rm).
EOF
        exit
}

while getopts hina: o
do
	case "$o" in
	-) break ;;
	h) help ;;
	a) a="$OPTARG" ; shift ;;
	i) i=-i ;;
	n) n=echo ;;
	*) echo "Unknown Option: $o" >&2
		help
		;;
	esac
done
shift `expr $OPTIND - 1`

[ 0 -lt $# ] || help
[ X = X"$a" ] || a="-mtime +$a"

for d
do
	find "$d" -name archive -type d -exec sh -c '
		find "$1" -type f '"$a"' -exec '"$n"' rm '"$i"' -- "{}" \;' -- '{}' \;
done