The moment you chain 7 commands including awk or write a shell script with many subroutines is time to consider a "real" language like perl or python, or even c/c++/java. File operations are a bit ...

I'd like to reiterate the importance of teaching newbies the difference between chaining commands with `;` and `&&` as pointed out already by someone else. P.s. As a newbie at commenting here, I had ...