如何在shell脚本中为用户分配密码

echo <password> | passwd ?Cstdin <username>

cho "password" | passwd --stdin user

read -p "Enter Password for User jack: " pwd

echo $pwd | passwd --stdin user

while :

do

    read -p "Enter Password for User user: " pwd1

    read -p "Confirm Password for User user: " pwd2

    if [ "$pwd1" == "$pwd2" ]

    then

        break

    else

        echo "Password and Confirm password doesn't match...."

    fi

done

echo $pwd1 | passwd --stdin user