Android creator Andy Rubin has reacted to comments by Apple chief executive Steve Jobs suggesting that Google's mobile operating system is not a truly open platform.
Writing for the first time on a previously dormant Twitter account, Rubin attacked Jobs's accusation by using a sample of code from Android to make the point that the system is open and available to any developers.
"The definition of open: 'mkdir android ; cd android ; repo init -u git://android.git. kernel.org/platform/manifest.git ; repo sync ; make'," said the Twitter post.
The terms 'repo' and 'git' refer to the systems of code that developers use to build applications for Android.
Rubin's is the first notable response from Google to the comments made by Jobs on Monday evening during an earnings call about Apple's fourth-quarter results.
"In reality we think the open versus closed argument is a smokescreen to hide the real issue. We think Android is very fragmented and becoming more fragmented by the day," Jobs said.
Jobs was clearly in a bullish mood after Apple announced record profits for the quarter of $4.31bn. He went on to attack the challenges of Google and Research in Motion (RIM) in the smartphone market.
"We have now passed RIM, and I don't see them catching up with us in the foreseeable future. I think it is going to be a challenge for them to create a competitive platform," he said.
V3.co.uk contacted Google for an official response to Jobs's comments, and to verify Rubin's Twitter account, but had not received a response at the time of publication.
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