sudo命令
含义：execute a command as another user.
格式： sudo -h | -K | -k | -V sudo -v [-AknS] [-a type] [-g group] [-h host] [-p prompt] [-u user] sudo -l [-AknS] [-a type] [-g group] [-h host] [-p prompt] [-U user] [-u user] [command] sudo [-AbEHnPS] [-a type] [-C num] [-c class] [-g group] [-h host] [-p prompt] [-r role] [-t type] [-T timeout] [-u user] [VAR=value] [-i | -s] [command] sudoedit [-AknS] [-a type] [-C num] [-c class] [-g group] [-h host] [-p prompt] [-T timeout] [-u user] file ...
选项：
- -l 列出权限
相关命令：
- su 切换身份
- sudoedit
免sudo：
- 编辑/etc/sudoers
## Allow root to run any commands anywhere root ALL=(ALL) ALL 添加：
user1 ALL=(root) NOPASSWD: /usr/sbin/useradd, /usr/sbin/usermod