Linux from getting started to mastering--linux file addressing and file management

I. System Architecture of Linux

Linux is a tree-down structure, the largest directory is "/" (root directory), and the root directory of the two-level directory is the system during the installation process.

　　　　　　　　　　　　　　　

　　　　　　　　　　　　　　　　　　

Two. Administrative commands for files

One of the important ideas in Linux is that everything can be treated as a file , so it's important to deal with files in Linux learning, and here's how to manage files

1. Document creation

Touch File

Attention:

Touch can not only create files but also modify the timestamp of the file, the timestamp is divided into:

Atime: The time ID that is accessed within the file

Mtime: The time that the file content was modified is identified

CTime: The time that the file attribute or file content was modified is identified

That is, the corresponding command is: touch-a filename

touch-m filename

touch-c filename

You can see a new file named "File" appears on the desktop of the virtual machine, and a new file is created with the Touch command. If you want to see the effect of touch modification timestamps more visually, you can use the Stat command to do a simple experiment with touch-m as an example.

You can see that the second time you use the Touch command, the Modify and change of file files have changed, that is, Mtime and CTime have changed.

2. Create a Directory

mkdir Directory

Mkdir-p DIR1/DIR2/DIR3 # #-P indicates that when a recursive directory is established, it is automatically created when the upper directory does not exist

Linux from getting started to mastering--linux file addressing and file management