Fun with null and zip

1) Make a text file let give name a.txt file

2) Open and type the null character (alt + 255)

3) Press ctrl + a then ctrl + v a couple times to make some null bytes

4) Now make several copies of a.txt and name accordinly

5) Open cmd.exe

6) Type copy /b *.txt mainfile.txt

7) Now every copy is made into a super copy and repeat

now zip it and see its size.....its very less so give that file to you friend and say him to unzip.....