The use of MD5SUM commands under Linux __linux

md5sum is the command used to compute and verify the MD5 value of a file (the MD5 full name is an algorithm for digest (Message-digest algorithm 5)). It is quite convenient to use, when we download some files from the network, especially the system mirrors are generally followed by the file's MD5 value, you can use this command to verify the integrity of the file.

1. Calculate the MD5 value of a file

md5sum filename > Filename.md5

View the Filename.md5 file in the form of a 32-digit hexadecimal number with two spaces in the middle, followed by the filename

2. Verify the MD5 value of a file

Md5sum-c FILENAME.MD5

This ensures that the filename file and the Filename.md5 file are in the same directory, and if correct, the correct two words will be output.

3. View the MD5 value of a string

echo "123456" | Md5sum