#!/bin/shPASSWORD="foobar"password_good=0password_bad=0password_blanks=0case "$1" in"no-socket")exit 2;;*)for dummy_key in 0 1 2doecho "Enter passphrase for $dummy_key" >&2while truedoread answercase $answer in"$PASSWORD")password_good=$(expr "$password_good" + 1)break;;"")password_blanks=$(expr "$password_blanks" + 1)break;;*)password_bad=$(expr "$password_bad" + 1)echo "Bad passphrase, try again for $dummy_key" >&2continue;;esacdonedoneecho "Correct password $password_good, bad password $password_bad, password_blanks $password_blanks" >&2if [ $password_good -eq 3 ]; thenexit 0;elseexit 1;fiesac