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This article mainly introduces the "linux how to judge whether the content of the file is the same" related knowledge, editor through the actual case to show you the operation process, the method of operation is simple and fast, practical, I hope that this "linux how to judge whether the content of the file is the same" article can help you solve the problem.

In linux, you can use the md5sum command to determine whether the file content is the same, the command can generate and verify the file MD5 value; md5sum checks the file content, not the file name, if different files have the same MD5 value, then the file content is the same, syntax is "md5sum file name".

This article operating environment: linux7.3 system, Dell G3 computer.

How does linux judge whether the content of the file is the same?

MD5 algorithm can be used to verify the integrity of network file transfer. The md5sum command of Linux is used to generate and verify the MD5 value of the file. It is important to note that md5sum verifies the contents of the file, not the file name.

Syntax:

Md5sum [options]... [file].

The md5sum command uses the MD5 message digest algorithm (128bit) to calculate and check the checksum of the file. Generally speaking, after Linux is installed, there will be a md5sum tool that runs directly on the command line terminal.

The md5sum command is used to generate and verify the MD5 value of the file. It verifies the contents of the file bit by bit. Is the content of the file, independent of the file name, that is, the file content is the same, its md5 refers to the same.

Special instructions:

1) md5sum is used to verify the contents of the file, regardless of whether the file name is the same

2) the md5sum value is verified bit by bit, so the larger the file, the longer the verification time.

Summary: check the generated file check code through md5sum to find the file content inconsistency caused by abnormal file transfer (network transfer, replication, local transfer between different devices).

Examples are as follows:

As can be seen above, the contents of the test1 and test2 files are the same.

This is the end of the introduction to "how linux determines whether the content of the file is the same". Thank you for your reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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