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This article introduces the "Linux system how to identify file types without extensions" related knowledge, in the actual case of the operation process, many people will encounter such a dilemma, then let the editor lead you to learn how to deal with these situations! I hope you can read it carefully and be able to achieve something!

We know that the Linux file system is one of the basic functions supported by the Linux kernel and forms an inverted tree-like cascade structure from the root / down. Files and directories are the two basic elements of the Linux file system. (in a broad sense) files are divided into ordinary files, directory files, connection files and special files. Different file types can be identified through the file command.

Linux is not as strict about the extension of files as required by windows, so in the process of using linux, we often encounter that some files do not have an extension at all, so how should we judge whether a file without an extension is a file or a directory? In fact, we can check the file type with the help of file. The example is as follows:

[root@localhost ~] # file install.log

Install.log: UTF-8 Unicode text

Install.log is a text file

[root@localhost ~] # file / usr/local/

/ usr/local/: directory

/ usr/local is the directory

Don't underestimate the file command just because it's simple. It's useful to use the file command to determine file types that don't have an extension.

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