我在ubuntu 12.04中使用android-ndk-r9d-linux-x86的ndk-gdb来调试android本机应用程序“hello-jni”,但它收到此错误.

  WARNING: The shell running this script isn't bash.  Although we try to avoid bashism in               scripts,things can happen.
  .../adt-bundle-linux-x86-20140321/android-ndk-r9d/ndk-gdb: 143: .../adt-bundle-linux-x86-20140321/android-ndk-r9d/ndk-gdb: Bad substitution
  .../adt-bundle-linux-x86-20140321/android-ndk-r9d/ndk-gdb: 555: [: 1: unexpected operator
  .../adt-bundle-linux-x86-20140321/android-ndk-r9d/ndk-gdb: 771: [: armeabi-v7a: unexpected operator

但android-ndk-r8e-linux-x86还可以,我想知道为什么？谢谢.@H_404_10@