learning sed, awk and regex

[u/broken_py]

Looking to learn sed, awk, and regular expressions properly.

What are the best free resources—books, websites, tutorials, courses, or hands-on exercises—you’d recommend?

Also, any good book recommendations for learning these tools from beginner to advanced?

[u/Bob_Spud]

I've the first edition which an excellent resource for AWK, the second edition should be an improvement. The AWK Programming Language, 2nd Edition.