Bash script to automatically install and update the Android SDK

install-android-sdk.sh

#! /usr/bin/env bash

# This script downloads the Android SDK.
# It depends on the following
#
# * curl
# * tar

BASE_DIR=`pwd`

DOWNLOAD_DIRECTORY=sdk
REMOTE_FILES=(http://dl.google.com/android/{android-sdk_r18-linux.tgz})

echo "Installing Android SDK."

if [ ! -d $DOWNLOAD_DIRECTORY ]
then
    echo "Creating directory" $DOWNLOAD_DIRECTORY
    mkdir $DOWNLOAD_DIRECTORY
fi

cd $DOWNLOAD_DIRECTORY
for FILE in $REMOTE_FILES
do
    START=`expr index $FILE '{'`
    END=`expr index $FILE '}'`
    LENGTH=$[ $END - $START - 1 ]
    NAME=${FILE:START:LENGTH}
    if [ ! -f $NAME ]
    then
	echo "Downloading" $FILE
	curl $FILE -o $NAME
    fi
done

find . -name '*.tgz' | xargs tar xfkvmz

while read DIR
do
    cd "$DIR/tools"
    ./android --verbose update sdk --no-ui
done < <(find . -name 'android-sdk-*')

echo "Finished."