grep or find on Android

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http://stackoverflow.com – These are not installed on Android 4.2.1 by default, so is it possible to cross-compile the source for e.g. GNU grep or find and have it run on Android? ( Preferably without having to root the device or installing some app off PLAY.) Are there any missing dependencies that will prevent this? I am developing on Ubuntu 10.0.04 (HowTos)