sed

What problem does it solve?

Sed empowers you to perform text substitutions, line operations, and transformations directly in streams, reducing manual editing work.

Core Features & Use Cases

• In-place editing: Edit files directly without creating backups (with optional backups as needed).
• Regex-powered substitutions: Apply complex pattern replacements across files or streams.
• Line and pattern operations: Extract, print, delete, and transform lines based on patterns or ranges.
• Use Case: Normalize whitespace and reformat text across a codebase during a build or cleanup.

Quick Start

Perform a simple substitution on a file by replacing all occurrences of "old" with "new" using sed.