!!! EDIT:
I did some research and find it:
How to install software applications on Linux, here follow the steps in the Application directory item, near the end of the article, worked for me :)
Don’t forget about the icon! For example:
Icon=/opt/left-linux-64/resources/app/icon.png
I’m not that experienced with alias and CLI, sorry…
I think the best thing to do is to manually install the app, so you can access it from the start/application menu, but I never did (right) so I can’t point you what to do :(
Try the ArchLinux Wiki for info ;)