thank you so much!

no. this isn't homework. I saw it in the facebook's puzzle master discussion. I'm using windows, and never use *nix OS before. thanks for your help. :)

by the way, I forgot to ask about $< and $@...

hi. I'm a newbie in shell scripting as well as the *nix OS.

I just wanna ask about the symbol #! that I saw in many shell script examples. For instance, #!/bin/bash. What does the #! symbol means?...