default permissions for folders?

Hi,

I think i screwed something up. and I'm trying to set the permissions.

I don't know what the permissions are supposed to be.

i've used 755 for the applications and system folder, now I can't ssh. I installed mobileterminal. hopefully i can fix the permissions with that.

cydia closes straight away, and ifile can't edit anything.

edit:
aha i found the answer. but maybe someone can tell me the proper permissions for everything anyway.

answer to cydia not working: chmod -R 6777 /Applications/Cydia.app

answer to ifile not having sufficient privileges:chmod -R 4755 /Applications/iFile.app

I still haven't been able to fix my ssh not being able to access port 22 (working before i changed some permissions) but I got around that by installing a deb file using option 3 with mobileterminal.deb

perhaps someone can tell me what file needs permission alteration to allow computer ssh access.

Cheers!