title: How can I know which architecture an *.a file is built for?
body: <p>I'm working on mac OS 10.7.4. using Xcode 4.3.2 .</p>
  
  <p>I had a *.a static library file from my partner. I want to know which architecture it is built for. Is it ARMv6, ARMv7, i386 or other architecture?</p>
  
  <p>Is there any command or method to get info about the architecture of the file?</p>