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 (such as substitution, deletion, or insertion), and outputs the modified text, making it ideal for automated text processing in scripts and pipelines.

Also known as: stream editor, sed command, sed utility, sed tool, sed editor

Why learn sed?

Developers should learn sed for tasks like batch text replacement, filtering log files, or cleaning data in shell scripts. It's particularly useful in DevOps workflows for configuration management, log analysis, and preprocessing data before further processing with other tools like awk or grep.

Learning Resources

• docs: GNU sed Manual
• tutorial: sed & awk Tutorial by Bruce Barnett
• tutorial: Learn sed in Y Minutes
• video: sed Tutorial on YouTube by Corey Schafer