Each time a flag is matched, the desired action is taken, variables are set and so on, then the shift command shows up again to move all the command flags down one (for example, $2 to $1, $3 to $2 and ...

Shell scripting is a lot more powerful than many people realize. With the right commands, shell scripting can automate many tasks and even make life easier for the user. Here's why you shouldn't sleep ...