How to uninstall xcode and iPhone SDK

My laptop is ThinkPad x61,
With only 160 GB harddisk. Although I use 25 GB for Mac OS
Developing, it's still not enough, especially when I need to update
IPhone's SDK.

Each time when I update
SDK, I need to uninstall the xcode to release at least 4 GB space, then
Install the new one again. But how to uninstall xcode?

Here is the command that I find from the Internet.

sudo /Developer/Library/uninstall-devtools --mode=all

It can't be more easier, isn' t it? Good luck!

How to uninstall xcode and iPhone sdks

The computer I used for iPhone development is ThinkPad.
X61, only GB hard disk, I divided 25 GB for the Apple system, after installing the iPhone development environment, only about 7 GB left, sometimes even less than 5 GB. Apple SDK upgrades are quite frequent,
There are also some beta sdks, and each upgrade will encounter the problem of insufficient space on the hard disk and I will not allow installation. You can only uninstall the original xcode and SDK before installing the new one.
So there is a need to uninstall, but how to uninstall it? After searching on the Internet, you can find it easy to use the command line.

sudo /Developer/Library/uninstall-devtools --mode=all