How to check file type in linux

The way to view file types in Linux is: 1. Open the terminal by pressing the `Ctrl Alt T` key at the same time; 2. Use the `cd` command to enter the directory containing the file you want to view; 3. In the terminal Enter the "file filename" command and press the Enter key; 4. The terminal outputs the type of the file.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

In Linux, you can use the `file` command to view file types. To operate the `file` command,

Please follow the steps below:

1. Open the terminal: You can usually open the terminal by pressing the `Ctrl Alt T` key at the same time.

2. Use the `cd` command to enter the directory containing the file you want to view.

3. Enter the following command in the terminal and press the Enter key:

file filename

Among them, `filename` is the file name of the type to be viewed (including the extension).

4. The terminal will output the type of the file, for example:

filename: ASCII text

At this time, you will know the type of the file. Of course there are many other attributes that are not listed here one by one.

It should be noted that some files do not have obvious extensions, so it may be difficult to determine their true type. Using the `file` command can help you accurately understand the file type and avoid dangers caused by incorrect operations.

In Linux systems, the common file types are as follows:

• Regular files: This is the most common File type used to store data information. Ordinary files are divided into two types: text files and binary files.

• Text files: Using character encodings such as ASCII or Unicode, containing character data formatted into lines, such as source code files, configuration files, log files, and books, etc. .

• Binary files: Binary data files that are not represented in ASCII code, such as executable programs, images, audio and video, etc.

• Directories: Directories are special files that store files and other directories, allowing users to organize files into appropriate categories to facilitate file search and management.

• Device files: The Linux system treats I/O devices as special files and creates corresponding files (such as tty, sda, eth0, etc.).

• Named pipes (FIFOs): are a special file type used for inter-process communication, very similar to network sockets, and have been shared by POSIX in modern operating systems memory instead.

• Link files (Links): Link files point to reference files of real existing files, linked through hard links and soft links.

• Sockets: Sockets are file types related to network communication. Local communication can be carried out through UNIX domain sockets, such as between client and server. TCP/IP socket.

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