<code>
wget https://dl.google.com/android/repository/platform-tools-latest-linux.zip
</code>

or

<code>
wget http://dl.google.com/android/android-sdk_r24.4.1-linux.tgz
tar xvf android-sdk_r24.4.1-linux.tgz
cd android-sdk-linux
./tools/android
# install SDK Platform-tools
./platform-tools/adb devices
./platform-tools/adb push /tmp/cm-12.1-20150816-NIGHTLY-d802.zip /cache/
./platform-tools/adb shell
sha1sum /cache/cm-12.1-20150816-NIGHTLY-d802.zip
exit
./platform-tools/adb reboot recovery
</code>