Why Are Most Groups So Inactive?

First, I have to admit that I only actively visit two social networking sites. However, I’ve noticed that all of the groups I’ve joined on either of those two sites never seem to have any activity. It seems that only once a month, if that, someone starts a new topic or responds to an existing topic.

I’m sure that it must just be the groups to which I belong, but it really is disheartening to post a query on which you’re looking for some input and end up getting diddly for responses.

Are you a member of any really active groups on the social networking sites you frequent? If so, are they specific niche groups, or are they something we might all be interested in? What are they?

Managing User Permissions on Unix

I am basically posting this here as a reference for myself, but I’m sure the information will be helpful to other people out there, as well.

Occasionally, when working on my Web server, I need to create a new user on the server and grant one or more other users permission to view and edit files within the new user’s home directory. This task, in itself, does not seem all that difficult on the surface. However, because most Unix servers are set up (and rightfully so, for security purposes) not to allow most users to navigate outside of their own home directories, it becomes a problem.

Let’s say, for example, that you have two users on your Web server that you want to allow permissions to view and edit each other’s home directories, but you don’t want them to have access to any other files and folders on the Web server.