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I "inadvertently" wiped system on my tablet with adb. No critique needed. I've already called myself all the names. What I need now is a way to put at least the "sh" program back on using adb or other program with “x” permission so that I can adb shell once again. Currently, adb removes the “x” permission when using the push option. I examined the adb source code and found one line in the sync section that seems to change permissions to 644. This is a project/challenge to recover this brick. I already have a replacement. Any solutions are welcome. Motherhood comments are not necessary please. Thanks.

P.S. The recovery mode is not working on this tablet (i.e. pwr/vol+/vol-, fastboot, etc.).

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    Just wondering: How did you wipe /system without recovery? And how do you access the device now without a working recovery? As you wiped /system, the device wouldn't boot up into normal mode either.
    – Izzy ♦
    Jun 3, 2014 at 22:21
  • Assuming you're on Android 4+, sh is symlinked to mksh. So why not just adb shell ln -s /system/bin/mksh /system/bin/sh?
    – dantis
    Jun 4, 2014 at 1:33

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You can try to install Busybox, SSHelper and Android Terminal Emulator (ATE). Then try to SSH into your device, if adb shell doesn't work. Google for SSH options how to specify the shell to run with remote SSH login. Probably something like ssh user@ip /system/bin/sh or try with ... /system/xbin/ash. Or in ATE you can specify under settings, the shell to use.

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