Have you EVER heard of or used the tac command?

[Shea Bennett]

Amazing session for the new Linux+ v.8 (006) exam TTT session today 9/11/2025.

Jason went over the tac command and many other options. I'm not even embarrassed to say I have never used the tac command or searched in files with grep. Excellent and eye opening session. I truly and completely appreciate going back to the roots and fundamentals. One thing I will say about Linux I truly love and enjoy. You never stop learning!

 

[jarrelrivera]

I've never used the tac command. I know it, just never used it.

The common commands I use for viewing the contents of a file are cat, less, more, head, tail, nano and vim. All of the commands I've mentioned are in the exam objectives for Linux+. I'm not sure about tac.

grep is a command that is very common in many of the CompTIA exams whether, it'd be for Linux+, Security+, CySA+, Pentest+ and even SecurityX (formerly CASP+). I personally use grep in many scripts.

aside from grep, I also suggest knowing sed and awk