Forum .LRN Q&A: Response to spam mail in dotLRN class gives the following error

Or even better

Open emacs and do M-x shell

Then run tail -f error.log from within emacs.

Then you can search and page up and down in the error log.

Alternately use less. F will behave like tail -f. Hit C-c to stop it then use pgup/pgdn or f and b to page back and forth.