5.6. sed command

Editing files will be the subject of the next chapter. However, for some editing taks we can use the sed stream editor. Two important differences to a standard editor are:

• sed doesn’t change the file it is editing. It takes a stream and transforms it, sending the results to stdout.

• sed commands are global on the stream and are working on the whole stream. To limit the extent of a change we use addresses.

• 5.6.1. sed addresses
• 5.6.2. sed commands
• 5.6.3. How to run sed ?