生成随机密码

newpasswd=`</dev/urandom tr -dc '12345!@#$%qwertQWERTasdfgASDFGzxcvbZXCVB' | head -c8; echo ""`

https://www.cnblogs.com/skydragon/p/7200138.html https://blog.csdn.net/chj_1224365967/article/details/107357722