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In this article, the editor introduces "what is the meaning of linux rm" in detail, the content is detailed, the steps are clear, and the details are handled properly. I hope this article "what is the meaning of linux rm" can help you solve your doubts.

In linux, the full name rm is "remove", which means "delete" and is used to delete a file or directory with the syntax "rm [options] file or directory"; this command can permanently delete a specified file or directory in the file system without any prompt; if the file is not backed up, it cannot be restored.

The operating environment of this tutorial: CentOS 6 system, Dell G3 computer.

Linux rm, English spelling: remove.

The Linux rm command is used to delete a file or directory.

Rm is a powerful delete command that permanently deletes files or directories specified in the file system. When you delete a file or directory using the rm command, no prompt is generated. The basic format of this command is:

Rm [options] file or directory

Options:

-f: force deletion (force), contrary to the-I option, use-f, the system will no longer ask, but directly delete the target file or directory.

-I: on the contrary, before deleting a file or directory, the system will give you a prompt, and using-I can effectively prevent the accidental deletion of useful files or directories.

-r: recursive deletion, mainly used to delete directories, you can delete the specified directory and all its contents, including all subdirectories and files.

Note that the rm command is a destructive command because the rm command permanently deletes a file or directory, which means that if a file or directory is not backed up, it cannot be restored once it is deleted using the rm command, so be cautious, especially when using the rm command to delete a directory.

How to use the rm command:

1. Omit the option

If the rm command does not add any option, the default execution is "rm-I file name", that is, it asks whether to delete a file before deleting it. For example:

[root@localhost ~] # touch cangls [root@localhost ~] # rm canglsrm: do you want to delete the ordinary empty file "cangls"? Y# will be asked whether to delete it before deletion.

2. Delete the directory

If you need to delete a directory, you need to use the "- r" option. For example:

[root@localhost ~] # mkdir-p / test/lm/movie/jp# Recursively create a test directory [root@localhost ~] # rm / testrm: cannot delete "/ test/": it is a directory # if you do not add the "- r" option An error will be reported [root@localhost ~] # rm-r / testrm: do you want to enter the directory "/ test"? yrm: do you want to enter the directory "/ test/lm/movie"? yrm: do you want to delete the directory "/ test/lm/movie/jp"? yrm: do you want to delete the directory "/ test/lm/movie"? yrm: do you want to delete the directory "/ test/lm"? yrm: do you want to delete the directory "/ test"? y # will ask whether to enter the subdirectory or delete the subdirectory.

You will find that if every level of directory and every file needs to be confirmed, it will be a disaster in practice!

3. Forced deletion.

If there are 10,000 subdirectories or subfiles in the directory to be deleted, a normal rm deletion needs to be confirmed at least 10,000 times. Therefore, when we actually delete a file, we will choose to delete it forcefully. For example:

[root@localhost ~] # mkdir-p / test/lm/movie/jp# re-establish the test directory [root@localhost ~] # rm-rf / test# forced deletion, it's over

Deletion becomes easy after the mandatory feature is added, but it should be noted that data cannot be recovered after forced deletion unless you rely on third-party data recovery tools such as extundelete. However, it should be noted that data recovery is very difficult to recover complete data, and it is rare to recover 70% or 80% of the data. Therefore, instead of betting on data recovery, it is better to develop good operating habits.

Although the "- rf" option is used to delete directories, deleting files does not report an error. Therefore, in order to make it easy to use, the "- rf" option is used directly, whether it is to delete files or directories.

After reading this, the article "what is the meaning of linux rm" has been introduced. If you want to master the knowledge of this article, you still need to practice and use it to understand it. If you want to know more about related articles, you are welcome to follow the industry information channel.

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