How to recover file contents in Linux?

To recover the content of files in Linux, you can try the following methods:

1. Backup usage: If you have a backup of the file, you can restore the backup file to its original location.
2. There are several file recovery tools available for Linux, such as TestDisk, PhotoRec, etc. These tools can scan the file system and attempt to recover deleted or damaged files. You can install and use these tools by running commands in the terminal.
3. Some Linux distributions have an undelete command available that can be used to recover deleted files. You can try running “undelete ” in the terminal to recover the file.
4. Utilize file system logs: Some file systems (like ext4) create log records when files are deleted. By analyzing the file system logs, you can recover deleted files. This requires some technical knowledge and command line operations.

Please note that recovering files is not always successful, especially if the files have been overwritten or damaged. Therefore, it is best to stop any writing operations on the hard drive before attempting file recovery, and take recovery measures as soon as possible to maximize the chances of success. In addition, regular backups are the best practice to prevent file loss.