„Using the sed Editor
The sed editor is among the most useful assets in the Linux sysadmin’s toolbox,
so it pays to understand its applications thoroughly
One of the best things about the Linux operating system is that it is crammed full of utilities. There are so many different utilities, in fact, that it is next to impossible to know and understand all of them. One utility that can simplify life in key situations is sed. It is one of the most powerful tools in any administrator’s toolkit and can prove itself invaluable in a crunch. „