QRCode Generator

#useage: qrcode yourcontent
#then you will get a qrcode png file which included to your content

function qrcode() {
        content=$1
        savename=$(date +%Y%m%d)"_"${content:0 :4 }".png"
        url="https://chart.googleapis.com/chart?cht=qr&chld=H&chs=200x200&chl="
        req=$url$content
 
        curl $req > $savename
 
        if [ $? == 0 ] ; then
                echo "saved as "$savename
        else
                echo "error.curl."$?
        fi
}