[sabinrf24]

I recommend logparser 2.2 from Microsoft, of all sources. Pick whatever number increments make sense for you. I use this on 10-20GB logfiles regularly and I find it to be one of the best ways to handle them on Windows.

C:\Program Files (x86)\Log Parser 2.2>logparser -i:TEXTLINE "SELECT * FROM 'F:\P
rogram Files (x86)\Sony\EverQuest\Logs\eqlog_Character_project1 999.txt' WHERE Index
> 0 AND INDEX < 10000"

C:\Program Files (x86)\Log Parser 2.2>logparser -i:TEXTLINE "SELECT * FROM 'F:\P
rogram Files (x86)\Sony\EverQuest\Logs\eqlog_Character_project1 999.txt' WHERE Index
> 10000 AND INDEX < 20000"

logparser -h to see the export options, for CSV it would be:

C:\Program Files (x86)\Log Parser 2.2>logparser -i:TEXTLINE -o:CSV "SELECT * FROM 'F:\P
rogram Files (x86)\Sony\EverQuest\Logs\eqlog_Character_project1 999.txt' WHERE Index
> 10000 AND INDEX < 20000" > C:\folder\test.csv