How to use grep to recover mistakenly deleted text files by linux

This article mainly explains "how to use grep to recover deleted text files in linux", the explanation in the article is simple and clear, easy to learn and understand, please follow the ideas of Xiaobian slowly, together to study and learn "how to use grep to recover deleted text files in linux"!

First create a temporary text file vpsee.log for testing, and then delete this file:

$ echo "important log file for vpsee.com" > vpsee.log

$ cat vpsee.log

important log file for vpsee.com

$ rm vpsee.log If you can remember a keyword in the file you just deleted, you can use grep to search the entire/dev/sda1, the-a flag means to treat the partition/dev/sda1 as text (the partition itself is binary), and the-B 10 -A 100 means to print the first 10 and last 100 lines of the keyword if you find it:

# grep -a -B 10 -A 100 'vpsee.com' /dev/sda1 > tmp.txt Find what we just deleted among the @:

$ vi tmp.txt

...

@$^@^@^@^@^@^@^@^@^@^@^@^A^@^@^@^@^@^@^@Ç^@^@^@^A^@^@^@^@^@^@^@^@^@^@^@È^K^@^@^@

^@^@^@^@^@^@^@^@^@^@^@^A^@^@^@^@^@^@^@^Q^@^@^@^C^@^@^@^@^@^@^@^@^@^@^@È^K^@^@×^@

^@^@important log file for vpsee.com

@

@

... Of course, if you delete binary, doc, png/jpg/gif files by mistake, you can use some third-party ext2/ext3 file recovery tools to help recover files, such as TestDisk, PhotoRec, etc.

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