function inpasswd {
read -s -p "Enter You Password:" passwd1
echo
read -s -p "Please Check Password" passwd2
echo
if [[ $passwd1 == $passwd2 ]]
         then
                echo "correct" && exit 1
         else
                 echo "incorrect"
                 echo "Please Input Agin"
fi    
}
count=1
while true
do
if [ $count -gt 3 ]
then
break
fi
inpasswd
((count++))
done
echo "Input 3 Times and exit ByeBye"

先放这。晚上再修改

本文出自 “流浪在海里的鱼” 博客，请务必保留此出处http://knowledgeq.blog.51cto.com/9549168/1881443

Bash Shell模拟密码输入