Introduction In spite of what we do and how fast we enter the commands, the reality is, we still can’t beat the performance of computers. From the other hand,

Introduction In spite of what we do and how fast we enter the commands, the reality is, we still can’t beat the performance of computers. From the other hand, if we keep repeating the same action multiple times, we can easily give computers a hard time, can’t we? You could write a bash script (your favorite programming language) and instead of entering the same commands, wasting your time and energy, run the script and have some time for yourself, sit back in a seat, think of the eternity, universe, or anything else that comes up on your mind.