Best Command Line Books

The best command line books teach you how to think in pipelines. Instead of using one large tool, you learn how small tools like grep, awk, sed, sort, uniq and find can be joined together to solve real problems.

Core commands worth learning

• grep for searching text.
• find for locating files.
• awk for working with columns and fields.
• sed for text replacement and stream editing.
• chmod and chown for permissions and ownership.

Turn reading into practice

If a book shows a command, type it out manually and then change one option. That small variation is where the learning happens. Reading without typing is just pretending with better lighting.

Good exercises after reading

• Search a log file for errors using grep.
• Find files larger than 100MB using find.
• Print a column from a file using awk.
• Replace text in a file using sed.

Once you have read the basics, practise using the Grep Quiz, AWK Quiz and Sed Quiz.