something about permission

I set up a svn server on my own Ubuntu\Linux.
When I enter commands like "svn commit *filename*", the terminal will remind
me that I have no permission to do that.(Of course, except for the case when
I add "sudo" to the head)
Then I wonder, if clients from different PCs try to commit something, how do
they get such permission?

Thanks in advance!
Received on 2010-10-17 14:04:33 CEST