1set -e 2 3L=$(getconf PATH_MAX / 2>/dev/null) || L=4096 4[ "$L" -lt 100000 ] 2>/dev/null || L=4096 5L=$((L+100)) 6T=$(mktemp -d ${TMPDIR:-/tmp}/sh-test.XXXXXX) 7trap 'rm -rf ${T}' 0 8cd $T 9D=$T 10while [ ${#D} -lt $L ]; do 11 mkdir veryverylongdirectoryname 12 cd veryverylongdirectoryname 13 D=$D/veryverylongdirectoryname 14done 15[ $(pwd | wc -c) -eq $((${#D} + 1)) ] # +\n 16