I'm on mac, I think I've done everything right so far. following these instructions:
it says to navigate to tools/ directory in terminal. Here are my steps.
Applications->adt-bundle-mac-x86_64-20130219 ->SDK -> tools
I recently encountered this issue, and figured I'd post on this for clarification or for anyone still encountering it.
It seems you have to be at the root of the
/adt-bundle-mac-VERSION/sdkdirectory in order to execute the "android" command.
I normally cd into the directory until I reach the location of the command, but in this case I encountered the same issue as the original poster.
You must use the tab key to the android command... ie...
locate your installation
/adt-bundle-mac-x86_64-20131030/sdk hit TAB key
/tools hit TAB key
If done properly the SDK manager should launch for you.
Hope this helps anybody out there.