#md5sum

Generates / checks MD5 checksums.

echo a > a
echo b > b
md5sum a b > f
cat f

60b725f10c9c85c70d97880dfe8191b3  a
3b5d5c3712955042212316173ccf37be  b
md5sum -c f

Sample output:

a: OK
b: OK

##Application

Have I downloaded the right file?

It is very difficult to make another file with the same checksum.