shell调用expect实现用户创建免密登录

这是一个用于（批量或者免交互）创建用户免密的shell脚本

通过shell的for循环和变量，实现批处理和免交互

#!/bin/bash
password="liwanliang"
expect -c "
        spawn ssh liwl@node084
        expect {
                \"*yes/no*\" { send \"yes\r\", exp_continue }
                \"*password:*\" { send \"${password}\r\" }
        }
        expect \"$ \"
        send \"ssh-keygen -t rsa -f ~/.ssh/id_rsa -P \'\'\r\"
        expect \"$ \"
        send \"cat ~/.ssh/id_rsa.pub > ~/.ssh/authorized_keys\r\"
        expect \"$ \"
        send \"chmod 600 ~/.ssh/authorized_keys\r\"
        expect \"$ \"
        send \"exit\r\"
"
echo "操作成功!"

上面的cat ~/.ssh/id_rsa.pub > ~/.ssh/authorized_keys可以换成ssh-copy-id -i ~/.ssh/id_rsa.pub xxx@localhost