添加一个新的用户

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adduser qibao

给新的用户设置密码

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passwd qibao

切换到指定账户

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su qibao

查看当前账户id信息

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whoami
id [id] #id qibao

查看账户id的用户组

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groups [id] #id不填默认为当前用户的用户组

查看所有账户id和用户组

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cat /etc/passwd
cat /etc/group

赋予用户sudo权限

修改/etc/sudoers 文件赋予新用户权限

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## Allow qibao to run any commands anywhere
qibao   ALL=(ALL)       ALL

或者赋予新用户所在的组权限

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## Allows people in group qibao to run all commands
%qibao  ALL=(ALL)       ALL