sed

sed (stream editor) is a Unix command-line utility for parsing and transforming text streams. It reads input line by line, applies specified editing commands (like search, replace, insert, or delete), and outputs the modified text, making it ideal for batch text processing in scripts and pipelines.

Also known as: stream editor, sed command, GNU sed, sed utility, s/ed

Why learn sed?

Developers should learn sed for automating text manipulation tasks in shell scripts, such as search-and-replace operations in configuration files, log file processing, or data cleaning. It's particularly useful in DevOps workflows, system administration, and when working with large datasets where manual editing is impractical.

Learning Resources

• docs: GNU sed Manual
• tutorial: sed - An Introduction and Tutorial
• tutorial: Learn sed in Y minutes
• video: sed Tutorial on YouTube by Corey Schafer