https://wangchujiang.com/linux-command/c/grep.html

//debian新建用户命令 https://www.jianshu.com/p/a60340df9004?utm_campaign //samba映射 https://www.linuxidc.com/Linux/2018-11/155466.htm

df -h free cat /proc/cpuinfo top

ubuntu在脚本文件中passwd命令，无交互式输入密码 https://www.codenong.com/714915/