#!/bin/bash REQUIRED_PKG="libcurl4-openssl-dev ffmpeg libavcodec-dev libavformat-dev libswscale-dev" PKG_OK=$(dpkg-query -W --showformat='${Status}\n' $REQUIRED_PKG|grep "install ok installed") echo Checking for $REQUIRED_PKG: $PKG_OK if [ "" = "$PKG_OK" ]; then echo "No $REQUIRED_PKG. Setting up $REQUIRED_PKG." sudo apt-get --yes install $REQUIRED_PKG fi