Open and scroll through 42 GB text file in Mac OS X
The easiest way is to use a terminal pager. Open a terminal and run
less file.txt
or
more file.txt
Well, hexfiend is what I use, and love to use...
If it is a text file, you just go to Views and uncheck Hexadecimal option, it will show only text.
So, for example I scrolled to line: 37802466 superfast, no glitches...