Linux用户及用户组管理命令

more /etc/group                                                     查看所有的组

more /etc/passwd                                                   查看所有的用户

whoami                                                                   查看当前登录的用户

 groups 用户名                                                        查看用户所属组

id 用户名                                                                 查看用户所属组

groupadd 组名                                                         新增组

groupdel组名                                                            删除组

groupmod 新组名 老组名                                         修改组名

useradd 用户名 -g 主用户组 -G 附加用户组            新建用户

userdel 用户名                                                         删除用户

passwd 用户名                                                         修改密码