Run Android Emulator (AVD) from Bash Script

runavd.sh

#!/bin/bash

function selectAVD()
{
		echo "Available AVDs:"
		$emuDir/emulator -list-avds
		echo "Which AVD would you like to use?"
		read myAVD
		ARRAY=($($emuDir/emulator -list-avds))
		isIn=false
		for i in $ARRAY; do
			if [[ $i == $myAVD ]]; then
				isIn=true
			fi
		done
		if [[ isIn ]]; then
			echo $myAVD > "$HOME/.myAVD/myAVD.tmp"
		else
			echo "Not an available emulator."
			exit
		fi
}

function selectDir()
{
	echo "(Default is typically [your Android directory]/Sdk/emulator"
	read -e -p "Directory: " emuDir
	emuDir=$(eval echo $emuDir)
	if [[ ! -f $emuDir/emulator ]]; then
		echo "This is not a valid emulator directory."
		exit
	else
		echo "Directory selected."
		echo $emuDir > "$HOME/.myAVD/emuDir.tmp"
	fi
}

if [[ ! -d $HOME/.myAVD ]]; then
    mkdir $HOME/.myAVD
fi
if [[ -f "$HOME/.myAVD/emuDir.tmp" ]]; then
	emuDir=$(<$HOME/.myAVD/emuDir.tmp)
else
	echo "No AVD Directory selected. Please input your AVD directory."
	selectDir
fi
if [[ -f "$HOME/.myAVD/myAVD.tmp" ]]; then
	myAVD=$(<$HOME/.myAVD/myAVD.tmp)
else
	if [[ $(eval echo $emuDir/emulator -list-avds) == ''  ]]; then
		echo "No available AVDs. Please create one in your Android Studio."
	else
		echo "No current AVD selected."
		selectAVD
	fi
fi
if [[ $1 == 'list' ]]; then
	$emuDir/emulator -list-avds
	echo 'Current emulator:' $myAVD
elif [[ $1 == 'setAVD' ]]; then
	selectAVD
elif [[ $1 == 'setDir' ]]; then
	selectDir
elif [[ $1 == '' ]]; then
	$emuDir/emulator -avd $myAVD
elif [[ $1 == 'help' ]]; then
	echo "Available commands:"
	echo "list: lists available AVDs and displays current default AVD"
	echo "setAVD: sets new Default AVD"
	echo "setDir: sets new emulator directory"
	echo "inputting no command will open current default AVD."
else
	echo 'Unknown input'
fi

Thanks goes to Colin Brennan @SysVisionz