I downloaded Etcher in an attempt to install RetroPie. After unzipping, it gives me an AppImage, which I'm supposed to be able to run from anywhere. I changed the permissions
$ chmod a+x balena-etcher-electron-1.4.9-i386.AppImage
Then tried to run it from the command line. No good.
$ ./balena-etcher-electron-1.4.9-i386.AppImage
./balena-etcher-electron-1.4.9-i386.AppImage: error while loading shared libraries: libfuse.so.2: cannot open shared object file: No such file or directory