===first install adobe air ==========
wget -O adobe-air.sh http://drive.noobslab.com/data/apps/AdobeAir/adobe-air.sh
chmod +x adobe-air.sh;sudo ./adobe-air.sh
====second install scratch2========
wget https://scratch.mit.edu/scratchr2/static/sa/Scratch-458.0.1.air
reference from
http://etplayinfo.blogspot.com/2017/05/ubuntu-1604-64bit-adobe-air-scratch2.html
http://sypswiki.dcs.tn.edu.tw/wiki/index.php?title=Scrarch_2_for_ubuntu_%E5%AE%89%E8%A3%9D