Implementation of diff and patch command-line utility in Linux that allows you to compare two text files line by line and update the text file according to the instructions contained in the patch file The patch file consists of the list of differences produced by running the diff program with the original and updated file as arguments.
Implementation of diff linux command will print the difference between the two files in the format: NUMERIC LETTER NUMERIC. various options available for "LETTER" are : a - ADD. d - DELETE. c - CHANGE.
Implementation of -c, -u, -i, -b, -w, -t, --help options for diff command.