Cat Script Exclusive -

Reads all logs -> finds 404 errors -> sorts them -> counts unique occurrences.

#!/bin/bash # cat_script_template.sh cat "$1" | grep "keyword" | sort | uniq > output.txt cat script

However, don't let the efficiency police stop you! If the cat version is easier for you to read and remember, use it. In scripting, readability often trumps micro-optimization. Reads all logs -> finds 404 errors ->

The cat script is neither an anti-pattern nor a best practice in isolation. It is a valuable didactic and practical tool for linear text processing where readability and rapid prototyping are paramount. Novices gain intuition about Unix pipes through cat-centric scripts, and experienced users can deploy them for quick-and-clean automation. Developers should remain aware of the Useless Use of Cat critique but apply it judiciously: clarity often trumps trivial performance gains. Future work could explore automated refactoring tools that convert cat scripts to more efficient forms while preserving readability. In scripting, readability often trumps micro-optimization

Let’s say you have three log files from a web server ( access.log.1 , access.log.2 , access.log.3 ) and you want to merge them into one giant file for analysis.

You want to send a script to a friend that automatically extracts an image you've included.