#!/bin/bash
A="$1"
B="$2"
case "$A" in
/*) ;;
*) A="$PWD/$A"
esac
A=${A%/.}
C="$B/${A##*/}"
if [ -d "$B" ]; then
	if [ -L "$C" ]; then
		rm "$C"
	fi
elif [ -L "$B" ]; then
	rm "$B"
fi
ln -s "$A" "$B"