Create dummy file using dd on android via monkeyrunner script <p>I am writing a script to automate a test: fill the internal memory of an Android device. The script is written in python and I am using monkeyrunner to connect to the device and issue commands.<br> I need to create dummy files to do this. If I use this command:</p> <pre><code>subprocess.call('adb shell dd if=/dev/zero of=/storage/sdcard0/dummy/dummy_file bs=1000000000 count=1', shell = True) </code></pre> <p>It works. The dummy file is created. But I would like to use the following:</p> <pre><code>device.shell('dd if=/dev/zero of=/storage/sdcard0/dummy/dummy_file bs=1000000000 count=1') </code></pre> <p>Which should do the same thing. But the latter does not work and generates this:</p> <pre><code>Importing modules Waiting for connection 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] Error executing command: dd if=/dev/zero of=/storage/sdcard0/dummy/dummy2 bs=1000000000 count=1 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice]com.android.ddmlib.ShellCommandUnresponsiveException 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:408) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.ddmlib.Device.executeShellCommand(Device.java:453) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.chimpchat.adb.AdbChimpDevice.shell(AdbChimpDevice.java:269) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.monkeyrunner.MonkeyDevice.shell(MonkeyDevice.java:217) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at java.lang.reflect.Method.invoke(Method.java:597) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyReflectedFunction.__call__(PyReflectedFunction.java:175) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyObject.__call__(PyObject.java:355) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyMethod.__call__(PyMethod.java:215) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyMethod.instancemethod___call__(PyMethod.java:221) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyMethod.__call__(PyMethod.java:206) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyObject.__call__(PyObject.java:397) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyObject.__call__(PyObject.java:401) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.pycode._pyx0.f$0(/home/gabriel/android/git/androidqa/prebuilt/monkeyrunner/InternalStorage/int_storage_fill.py:57) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.pycode._pyx0.call_function(/home/gabriel/android/git/androidqa/prebuilt/monkeyrunner/InternalStorage/int_storage_fill.py) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyTableCode.call(PyTableCode.java:165) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.PyCode.call(PyCode.java:18) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.Py.runCode(Py.java:1197) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.core.__builtin__.execfile_flags(__builtin__.java:538) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at org.python.util.PythonInterpreter.execfile(PythonInterpreter.java:156) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.monkeyrunner.ScriptRunner.run(ScriptRunner.java:116) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.monkeyrunner.MonkeyRunnerStarter.run(MonkeyRunnerStarter.java:77) 121003 16:54:32.383:S [MainThread] [com.android.chimpchat.adb.AdbChimpDevice] at com.android.monkeyrunner.MonkeyRunnerStarter.main(MonkeyRunnerStarter.java:189) </code></pre> <p>Does anybody know why this error occurs?</p>