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User management via command line in Linux is a relatively new task to me. It’s fairly simple when using Webmin or an equivalent GUI, but straight old command line seems more imposing.

Fortunately, it’s really pretty simple, but you must have administrative/root user rights on the system. This is most likely in the form of sudo:

• Open a terminal window to get to a command line
• If you are not working directly on the computer running the system, SSH to that computer and log in
• type: sudo /usr/sbin/adduser new-user-name
• type in the sudo password when prompted

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Most of you Mac users are probably aware of the screen capture features that are part of Mac OS X: the Grab utility, the keyboard shortcut commands and the screencapture command in Terminal. No?

Let’s look at the options:

Grab

The Grab application (Applications->Utilities->Grab.app) is a free, built-in screen capture program in Mac OS X that allows you to capture an area with the selection tool, a window, the whole screen and even the whole screen in Timed mode. The last option gives you time to move items or whatever for 10 seconds before taking the snapshot.

Keyboard Shortcuts

Keyboard shortcuts are a very fast way to snap screen captures once you memorized them:

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