#!/bin/sh -e

setting=$1
shift
value=$1
shift

if [ $# -eq 0 ]; then
	echo "usage: $0 setting value dir ..." 1>&2
	exit 1
fi

for d in "$@"; do
	if [ -e "$d"/cgitrc ]; then
		grep ^"$setting"= "$d"/cgitrc >/dev/null &&
		sed -i "s ^$setting=.* $setting=$value " "$d"/cgitrc ||
		echo "$setting=$value" >> "$d"/cgitrc
	else
		echo "$setting=$value" > "$d"/cgitrc
	fi
done