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What is the real life use of md5sum command ?

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What is the real life use of md5sum command ?
posted Nov 19, 2014 by Ganesh

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1 Answer

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Lets first understand what is MD5 - The MD5 is a message-digest algorithm is a widely used cryptographic hash function producing a 128-bit (16-byte) hash value, typically expressed in text format as a 32 digit hexadecimal number which is commonly used to verify data integrity.

Now md5sum, md5sum is a computer program that calculates or verifies 128-bit MD5 hashes (for a file)


$ md5sum myfile.txt > md5hash  (you can supply more then one file)
$ cat md5hash
595f44fec1e92a71d3e9e77456ba80d1  myfile.txt
$ md5sum -c md5hash
myfile.txt: OK

Say file got changed or corrupted then the last step will not give you OK as newfile md5hash would not be same as stored md5hash.

answer Dec 10, 2014 by Chirag Gangdev
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