How about this... All programs take a list of arguments when they are executed. Shell code, while it can be as simple as a program and list of arguments, is a

How about this... All programs take a list of arguments when they are executed. Shell code, while it can be as simple as a program and list of arguments, is actually a small programming language. In shell code a b | tee a. log Pipe is not an argument, it's code that the shell interprets. system() takes shell code.