Hi, I am using Ubuntu (newbie) and I installed JRE, JDK and Android-SDK knowing that this is what I need to start developing android apps. However, I noticed that platform-tools directory is missing. According to some articles that I read, I need to run the android tool inside the "Tools" folder to get a copy of the missing folder. But when I try to run "android" tool, it gives me this error "android: Command not found". I did not do anything aside from installing JRE, JDK and Android-SDK. what did I miss? Thanks!