1. Files and Folders (directories)

What is a file?

It is usually a stand-alone thing that can be opened with specific tools and cannot contain anything other than text. Such as:

In daily operation and maintenance work, more than half of the work is actually the operation of files.
Linux itself is an operating system based on file representation.

Linux everything is a file. A file on Windows is also a file on Linux. (2) Windows is not a file, under Linux is also stored as a file;
In daily study and daily work, what kinds of file operation are there?
Create file, edit file, save file, close file, rename file, delete file, restore file.

Bin: full binary. This directory stores a number of binary files, files can be run.
Dev: This directory stores external devices, such as disks and other cd-RoMs. External devices in it cannot be used directly and need to be mounted (similar to Windows drive assignment).
Etc: This directory stores configuration files.
Home: indicates the home directory of other users except the root User, similar to the User/ User directory in Windows.
Proc: process, the directory that stores the Linux runtime processes.
Root: This directory is the home directory of user root.
Sbin: super binary. This directory also stores binary files that can be executed, but can only be executed by users with super permission.
TMP: temporary. Temporary files generated when the system is running are stored in this directory.
Usr: stores software installed by users themselves. Similar to Program Files under Windows.
Var: directory for storing program/system log files.
MNT: If an external device needs to be mounted, it needs to be mounted to the MNT directory.