There’s a number of times you might need to access a file on your filesystem that another user has in their user folder. It might be that they quit the job and left all their files locked up, it might be that you’re trying to sync your significant others files across multiple computers but either way, you’re locked out of the files.
If you need access to a file and all you see on the folder is a red circle with a line through it, then you’re going to need to change its permissions. As long as you have access to an administrator account, you should be able to fix up the permission error in no time at all. Here’s how you change a file or folder permission with the Finder in both Snow Leopard and Leopard.
At this point in the process you should be able to now open the folder and access the files where ever you need be. It’s pretty handy to be able to do this through the finder, and it’s even handier to be able to do it from the terminal you’re forced to do it. The terminals a little bit trickier and we’ll save the tip for another day.