wpl_cli :not found with rooted android device?

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http://stackoverflow.com – i rooted my android device then i go to adb shell, then type su to enter wpa_cli. i surprise that this appeared : wpa_cli: not found although i get information when i type : wpa_supplicant? i know that wpa_cli from same library wpa_supplicant? from this link android is linux based!! so why these commands can't be found in their kernel ? (HowTos)