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How do you make a Mac not sleep?
Use the Energy Saver section of the System Preferences.
RubyMine 749 is out. Many of the existing bugs have been fixed, but a few new ones have been found. Notably, running specs with a “#” character in the describe string has problems.
The USPS has a nifty web service for addresses. The zip code lookup (which gives you zip+4) and the address standardization services were found to be useful.