What problem does it solve?
This Skill helps you perform sed-style file editing without the usual risk of destructive in-place changes. It is designed for safe text replacement, bulk edits, and stream processing while preserving the ability to preview results and recover from mistakes.
Core Features & Use Cases
- Safe file modification: Replaces risky sed -i workflows with automatic backups, rollback support, and dry-run previews.
- Flexible regex workflows: Supports PCRE by default while also handling ERE and GNU sed BRE compatibility for migration scenarios.
- Large-file processing: Works well for very large files by switching to streaming behavior with low memory usage.
- Use cases: Updating configuration files across a project, converting legacy GNU sed commands, cleaning log files, or making repeatable multi-step text transformations with safer defaults.
Quick Start
Ask to use the sedx skill to preview and apply a regex replacement in a file, then note the backup and rollback options.