Compares Two Groups of Files or Directory

how we compares two groups of files or directory to find information that does not match eachother with the fast way?

Here is the trick:

use command promt (DOS) in Windows OS

the command is :

COMP [d:][path][filename] [d:][path][filename] [/A][/C][/D][/L][/N:(number)]

Options

/A – Displays the differences found between compared files as characters.

/C – Performs a comparison that is not case-sensitive.

/D – Displays the differences found between compared files in decimal format. (The default format is hexadecimal.)

/L – Displays the number of the line where the difference occurred, rather than the byte offset.

/N:(number) – Allows you to enter the number of lines in both files that will be compared, even if the files are of different sizes.