in adb I am facing new error only my adb version is printing
padmakumar@padmakumar-desktop:~$ adb version Android Debug Bridge version 1.0.29
install following packages
sudo apt-get install lib32z1 lib32z1-dev lib32stdc++6
if you are using Genymotion then set path of Android SDK in its settings.
ref :http://www.intellicode.in/adb-not-responding-wait-more-or-kill-adb-or-restart/