In the journey that we had through the pages of this book, we saw lots of fun stuff, played with processes, sent signals, put things in the background, and wrote complex scripts. Everything done so far has one goal: to make us get the best from our Bash, have it working for us in repetitive tasks, and use built-ins, loops, and external commands to ease our everyday life as a power user. There are some times, though, when we need our scripts getting to work on a long run, maybe staying active indefinitely, so just running it as a normal program would not fit our need. We have to sweep through the obscure path of life as a daemon.