md5sum

1. md5sum is a command line tool used to calculate and verify the MD5 hash value of files.
2. MD5 (Message Digest Algorithm 5) is a widely used cryptographic hash function that produces a 128-bit (16-byte) hash value.
3. The hash value is unique to the file, and any change in the file will result in a different MD5 hash value.
4. The md5sum command is available in Unix-like operating systems such as Linux and macOS.
5. It works by taking the input file and computing the MD5 hash value using the MD5 algorithm.
6. The output of md5sum is a combination of the computed MD5 hash value and the filename.
7. The computed MD5 hash value is typically represented in hexadecimal form.
8. md5sum is often used to check the integrity of files by comparing the hash values of the original and downloaded files.
9. If the hash values match, it indicates the file has not been tampered with during transmission.
10. md5sum can also be used to generate checksums for a list of files and compare them against a known set of hash values for verification purposes.