At the end of this chapter you will know about the following topics:
What is sed?
Interactive use of sed
Regular expressions and stream editing
Using sed commands in scripts
This is an introduction
These explanations are far from complete and certainly not meant to be used as the definite user manual for sed. This chapter is only included in order to show some more interesting topics in the next chapters, and because every power user should have a basic knowledge of things that can be done with this editor.
For detailed information, refer to the sed info and man pages.