What is linux swp file

Linux swp file is a file with the suffix ".swp". This file is generated when using vi or vim to edit a file. When the editing is completed and exits normally, the file will be automatically deleted. ; The swp file is a hidden file and can only be viewed by using "ls -al" in the directory.

The operating environment of this article: Centos 7.6 system, Dell G3 computer.

What is a linux swp file?

The generation and solution of .swp files in Linux:

We use vi Command to edit the nginx.conf configuration file, and the prompt shown in the figure will appear. At this time, we can also directly press the E key to edit normally, but it may still occur next time. So what is the cause of this problem.

The following are two situations that will occur

(1) Another program may be editing the same file.  If this is the case,
    be careful not to end up with two different instances of the same
    file when making changes.  Quit, or continue with caution.
(2) An edit session for this file crashed.
    If this is the case, use ":recover" or "vim -r nginx.conf"
    to recover the changes (see ":help recovery").
    If you did this already, delete the swap file ".nginx.conf.swp"
    to avoid this message

Explain that this situation occurs because this file generates a swap file, that is, a file with the suffix .swp

1: When we edit a file and another person is also editing,

2 will appear: When we edit the file, there is a sudden power outage or sudden disconnection from the Internet. In order to prevent data loss, this will also appear. This kind of file

.swp file is swap (swap partition). When you use vi or vim to edit a file, it is generated. When the editing is completed and you exit normally, this file It will be automatically deleted. The .swp file is a hidden file. You can use ls -al in the directory to view it

When this file is generated, we can directly rm -f .nginx. conf.swp delete this swp file, otherwise a prompt will appear every time you edit it. However, if an abnormal exit occurs after editing the file, our configuration is not saved in the nginx.conf file at this time. We need to use vi -r nginx.conf to restore, as shown in the figure to restore the file, and then press Enter, the configuration will be restored from .swp to nginx.conf, and then delete the .swp file

If we change the settings for generating .swp files, we can add the set noswapfile command to the vim configuration (/etc/vimrc) to prevent this file from being generated during editing (set swapfile generates this file). However, it is recommended that everyone learn to use this file normally. Linux developers are more thoughtful and fully consider the mechanism under system abnormality to avoid data loss under system abnormality.

Recommended study: "linux video tutorial"

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