Virtual Desktops in Mac OS X
A colleague of mine is a recent Mac switcher and he was complaining to me that virtual desktops are not included in Mac OS X, the irony is that they are, they just have the name Spaces (coming from a heavy Linux background, I guess the naming convention just threw him off). Virtual Desktops are a very common and popular feature in most Unix GUI’s, but as Mac OS X has included virtual desktops within Mac OS X too.
Instead of being called “Virtual Desktops” though, Apple named them “Spaces”, but the concept is identical, multiple virtual workspaces on one machine. Spaces in Mac OS X lets you have up to 16 different workspaces to work within, you can even designate specific applications to run just within a particular space, which is very handy for creating a tidy work environment.
Tye Campbell wrote to us with the following question: “Do you guys know how to take apart an iPhone? Specifically the 3G model, I can’t find any way to get to the display and I’d like to do my own screen replacement since mine is cracked but I have another one available to me from a water-damaged iPhone. I’m pretty patient and don’t mind learning, but I don’t even know where to begin, any tips or starting points?”
There are times when a user will need to to manually set an IP address in Mac OS X to one which will be compatible with a joined network, either wi-fi or ethernet.
I just came across a really useful QuickLook plugin called SuspiciousPackage that lets you inspect those .pkg package installer files that so many Mac apps and downloads come in. Using this plugin, you can determine if an admin password is required, how many install scripts are in the package file, where the installation locations of files is going to be, and if a restart is required. 
You can change the Mac OS X login screen background picture using a few different methods. We have covered this tip before but it was based around a few Terminal commands that might not be easy to follow for the average Mac user without command line experience. With that in mind, here are ways to change the Mac login wallpaper:
You can convert many different image file formats in Mac OS X for free using the included Preview application, there’s no need to download additional tools or do anything overly complex. 
Mac OS X Server is infinitely better equipped, more stable, and just generally more pleasant than any of Windows offerings (yes I am biased, but it’s true), if you’re needing a server I highly recommend checking out Apple’s offering. Instead of shelling out the $499 for a copy though, you can get a free evaluation copy! If you’re a large corporation, small business, nonprofit organization, government agency, or educational institution, you can get a free and fully functional evaluation copy of Mac OS X Server directly from Apple. I just found out about this and I think it’s a pretty great thing for Apple to do, so if you qualify for a copy, check it out and you will be impressed.
If you’re ever wondering how long your Mac has been turned on and running for, you can discover exactly how long the computer has been on since last boot with two different methods available in OS X.
You can delete specific pages from a PDF file with the built-in Mac Preview app, available in all versions of OS X. This is really useful for paring down large PDF documents if you only need a few select pages, and learning how to delete specific pages from PDF files is bound to make any student or researchers life easier when emailing or printing documents.
Locker is a very simple Dashboard widget that does something Mac OS X should have included by default, it instantly locks your Mac desktop. 
