convert all png to jpeg

png2jpeg.sh

function png2jpeg() {
	echo 'Warning this command wil convert all png in jpeg recursively and delete png files'
	echo "Do you wish to Continue?"
	select yn in "Yes" "No"; do
    	case $yn in
        	Yes ) 	
				for f in `find . -name "*.png"`
					do
						alpha=$(identify -format %A $f)
						if [ "$alpha" == 'False' ] 
							then
	    					convert $f ${f/.png/.jpg}
    						rm $f
	    					echo "$f converted"
    					else
    						al=$(identify -verbose $f | grep -A 2 Alpha | grep min | grep 255)
    						if [ "${#al}" != '0' ]
    							then
		    					convert $f ${f/.png/.jpg}
	    						rm $f
	    						echo "$f converted"
    						fi
    					fi 
					done
 				break;;
        	No ) 
				exit;;
    	esac
	done
}