A user switching
1. Switch user to user
su username
2. Switch to the root user
sudo su
Second, catalog creation and management
1. Create a directory
移动至所要创建的目录下
mkdir name
2. Copy the files
cp name
3. Delete directory
rm name
4. Mobile Directory
进入所在目录
mv name /destination
Third, file creation and management
1. Create a file
touch name
2. File management
Copy, move, delete and other operations and directory operations is basically the same way.
