Making annoying errors shut up.
Burn the land and boil the seas, I use CLIs to clean WP. My heavy handed, command line methodology to scrubbing the heck out of a WordPress install when I clean.
Saving some manual labor with cron, bash scripting, and a config file.
Grep vs ack is like vi vs emacs. What tool you use is based on your comfort level. While I’ve been a grep-er for years, I just switched to ack, and I regret nothing.
Command line my trash? Why not!