1# $FreeBSD$ 2 3set -e 4cd /usr/bin 5[ "$PWD" = /usr/bin ] 6CDPATH=/: 7cd . 8[ "$PWD" = /usr/bin ] 9cd ./ 10[ "$PWD" = /usr/bin ] 11cd .. 12[ "$PWD" = /usr ] 13cd /usr/bin 14cd ../ 15[ "$PWD" = /usr ] 16