Essential Linux Command-Line Tools for File and Text Manipulation
Pattern Matching with grep
The grep utility searches for patterns within files or directory trees.
grep "error" system.log
grep -i "failed" app.log # Case-insensitive matching
grep -w "function" script.sh # Whole word matches only
grep -e "warning" -e "alert" debug.txt # Multiple ...
Posted on Sat, 19 Sep 2026 16:47:45 +0000 by Jacquelyn L. Ja