环境变量不小心搞坏了，备份一下，环境 “mac os x 10.7”
victormatoiMac:~ ericyang$ echo $PATH /opt/local/bin:/opt/local/sbin::/opt/StellaSDK/bin:/Applications/adt-bundle-mac-x86_64-20130219/sdk:/Users/ericyang/android-ndk-r8d:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/X11/bin:/Users/ericyang/android-ndk-r8d:/Applications/adt-bundle-mac-x86_64-20130219/sdk/platform-tools:/Users/ericyang/bin:/opt/Android/android-sdk-macosx/platform-tools:/Users/ericyang/android-ndk-r8d:/Applications/adt-bundle-mac-x86_64-20130219/sdk/platform-tools:/Users/ericyang/bin:/Applications/adt-bundle-mac-x86_64-20130219/sdk:/Users/ericyang/android-ndk-r8d:/Users/ericyang/android-ndk-r8d:/Applications/adt-bundle-mac-x86_64-20130219/sdk/platform-tools:/Users/ericyang/bin:/opt/Android/android-sdk-macosx/tools:/opt/Android/android-ndk-r7b:/opt/StellaSDK/bin:/Applications/adt-bundle-mac-x86_64-20130219/sdk:/Users/ericyang/android-ndk-r8d