1. sudo adduser username
sudo userdel username
2. sudo vim /ect/passwd all configuration store in this file,can rename
sudo passwd username change password
3. sudo groupadd group
sudo groupdel group
4. sudo adduser user group
sudo deluser user group
5. sudo vim /etc/group group configuration file find information
6.permission 777 755
7 7 7
owner group everybody(network user)
4: read permission
2: write permission
1 : execute permission
change permission: sudo chmod 777 file -R
(-R means include subfile,file in this file)
ls -l show file permission
7. sudo chown -R user file change the userowner of this file
sudo chgrp -R group file change the groupowner of this file
本文出自 “SystemAdmin笔记” 博客，请务必保留此出处http://christhai.blog.51cto.com/1584747/1754519
Lesson4 -Users, Groups and Permissions in Linux
原文：http://christhai.blog.51cto.com/1584747/1754519