Another great chapter that you have firmly under your belt and I hope it was really useful to you. Although we wanted to concentrate on using sed, we started with how powerful grep can be, both inside and outside our scripts. Although we have only just touched on sed, we will start extending this in the next chapter, where we will expand upon what we have learned.
Also, we learned how to substitute text and how to limit and globalize the substitution and how to save the editing stream using -i.
We learned how to insert, append, delete, and transform text using sed.
Finally, we learned how to run multiple sed commands using the -e option.
In the next chapter, we will learn how to automate Apache Virtual Hosts, how to create new virtual hosts automatically, and other cool stuff. The workhorse of all these operations will be sed and sed scripts.