Download and install imagemagick plus configure automator app for converting PDFs to PNGs

os-x-ghostscript-imagemagick

#!/usr/bin/env bash

# Install using:
# bash < <(curl -s https://raw.github.com/gist/1248106)
 
IM_URL=http://www.imagemagick.org/download/binaries/ImageMagick-x86_64-apple-darwin11.1.0.tar.gz
IM_TMP_FILE=/tmp/$(basename $IM_URL)

GS_URL=http://pages.uoregon.edu/koch/Ghostscript-8.71.pkg.zip
GS_TMP_FILE=/tmp/$(basename $GS_URL)
GS_TMP_PKG=/tmp/$(basename -s .zip $GS_TMP_FILE)

function continue_or_exit {
	read go < /dev/tty
	
	if [[ ! $go =~ [gG][oO] ]]; then 
		
		if [[ $go =~ [Ee][Xx][Ii][Tt] ]]; then
			exit 0
		else
			echo -e "Type \033[1m\033[35mgo\033[0m to continue or \033[1m\033[35mexit\033[0m to quit"
			continue_or_exit
		fi		
	fi	
}

# got curl?
DOWNLOAD=`which curl`
if [ $? == 0 ]
  then 
		echo "got curl"
		OPTIONS=" -o "
  else 
		echo "trying wget"
		# got wget?
    DOWNLOAD=`which wget`
		if [ $? == 0 ]
			then
				echo "got wget"
				OPTIONS=" -O "
			else
				echo "Giving up. You need to install curl or wget"
				exit 1
		fi
fi


# be idempotent
if [[ ! $(sum $GS_TMP_FILE) == '34584 88352 /tmp/Ghostscript-8.71.pkg.zip' ]]; then
		echo "Downloading ${GS_URL}"
		$($DOWNLOAD $OPTIONS $GS_TMP_FILE $GS_URL) 
fi		
# if we get a 1 from $? then the download failed or timed out
if [ $? == 0 ]
	then		
		unzip $GS_TMP_FILE -d /tmp/
		
		echo "Ghost script downloaded. I'll open a window for you to install it. Come back here once you're done."
		$(open $GS_TMP_PKG)
		echo -e "Once you've completed the ghostscript install type \033[1m\033[35mgo\033[0m and then press return to continue"
		echo -n "::: "
		continue_or_exit
		
	else
		echo "${GS_URL} download failed or timed out. Please try again"
		exit 1;
fi				

if [[ ! $(sum $IM_TMP_FILE) == '17246 30119 /tmp/ImageMagick-x86_64-apple-darwin11.1.0.tar.gz' ]]; then
		echo "Downloading ${IM_URL}"
		$($DOWNLOAD $OPTIONS $IM_TMP_FILE $IM_URL)
fi
		
# if we get a 1 from $? then the download failed or timed out
if [ $? == 0 ]
	then		
		cd $HOME
		tar -zxvf $IM_TMP_FILE

		echo 'export MAGICK_HOME="$HOME/ImageMagick-6.7.2"' >> ~/.bash_profile
		echo 'export PATH="$MAGICK_HOME/bin:$PATH"' >> ~/.bash_profile
		echo 'export DYLD_LIBRARY_PATH="$MAGICK_HOME/lib/"' >> ~/.bash_profile
	else
		echo "${IM_URL} download failed or timed out. Please try again"
		exit 1
fi		

echo "OK, you're all set with Ghostscript and Imagemagick"