解决mac os上网上下下来的可执行文件无法执行的错误

找到解决办法 ： http://blog.omgmog.net/post/a-possible-solution-to-bad-interpreter-operation-not-permitted-error-on-mac-os-x-lion/

原文如下：

Out of the blue I started having an issue in my Terminal.app on Lion where downloaded scripts/applications wouldn’t run. I first noticed this when trying to setup the Android SDK.

The problem looks like this:

-bash: ./android: /bin/sh: bad interpreter: Operation not permitted

After a bit of Google-fu, and a bunch of Apple Support Community threads that ended in people arguing about whether or not TextEdit caused this issue, I found a cause and a solution.

It turns out that for some reason, on Mac OS X Lion 10.7.3 apple is storing acom.apple.quarantine metadata file, which prevents executable files from being executed. Why is it doing this? Probably because the executable file was downloaded from the internet? who knows?

Anyway, there is a solution:

xattr -rd com.apple.quarantine [directory containing the executables]

So, for me with the Android SDK, I ran the following:

xattr -rd com.apple.quarantine /android-sdk/

This command deletes the com.apple.quarantine metadata files, allowing you to execute the executables.

That's a lengthy title I know, but it's there for the sake of keywords/SEO and such.