Text Processing (grep, sed, awk)

Summary

Command-line tools for searching (grep), transforming (sed), and extracting/processing (awk) text — indispensable for parsing logs and configuration files quickly from the terminal.

• 1Practice grep to search for a pattern across multiple log files.
• 2Use sed to find-and-replace text in a sample file.
• 3Write a simple awk command to extract a specific column from structured text output.