command:
1.help help
2.man online help
3.ls (list) view directory
4.-R = Tree
5.du (Disk Usage) statistics to develop a directory or file size of disk space occupied by
6.touch create an empty file with the test. If the current file already exists, the update timestamp of the file
7.mkdir (make directory) to create a new directory
8.cp (copy) to copy a file or directory
9.rm (remove) delete files or directories to develop
10.mv ( move) will develop a file or directory transfer position (cut), if the target position the same as the source location, is equivalent to execute the rename operation
11.which Linux command to find the location where the program
12.find fine to find a file or directory
13.stat View file details
14.type View external or internal command
15.pwd display the current working directory path
16.cd Change directory