Let’s assume that you need to download some sources using SVN on your Mac from Internet, from some URL.

Creation of new directory
mkdir /Users/user/Documents/TwtAPI

Going to directory
cd /Users/user/Documents/TwtAPI

Example of download command
svn checkout http://svn.cocoasourcecode.com/MGTwitterEngine/

Another example, but it’s depricated because Google Translate is no longer available through API:
1. mkdir /Users/user/Documents/GoogleTranslateAPI
2. cd /Users/user/Documents/GoogleTranslateAPI
3. svn checkout http://objc-google-translate-api.googlecode.com/svn/trunk/ objc-google-translate-api-read-only