Addresses

Addresses and Line Selection

How to target specific lines in sed using line numbers, regex patterns, ranges, and the negation operator so commands run only where you want.

Negating Addresses

Using the ! operator to invert a sed address so a command runs on every line the address does NOT select, plus common idioms and gotchas.

Advanced sed Scripting

Move past basic search-and-replace to use sed's address ranges, hold space, branching, and in-place editing for multi-line, stateful text transformations.