Running FSCK from TWRP v2.8.6.4

I have had problems recently with some force closes and someone suggested running fsck to check for system file errors. This was due to a logcat I posted which they browsed (thanks again Aquous).

I have never heard of doing this but after doing some googling I have gleaned some info about how to do it. I know how to connect the tablet and execute adb commands through the sdk. I was wondering if anyone would be able to talk me through doing this on this tablet as all the threads I came across were for different tabs.

I've gone into recovery and found files in /system/bin called fsck.exfat and fsck.f2fs but I am unsure exactly what mode I am supposed to be in in the recovery menu, is it the Terminal Command option or the ADB sideload option (or something else)? And what command do I need to use to run the fsck?

I saw one thread which said to use:
unmount /data
unmount /system
fsck /dev/block/stl9
fsck /dev/block/stl10
but that was for the Samsung Epic 4g, a search through the Samsung Galaxy Tab 2 forum didnt bring anything up.

Any help with this would be very gratefully received.

Cheers

Edit - I don't think I have correctly submitted this thread as a question. I cant manage to delete and re-submit, apologies in advance.