In any Linux Desktop Environment, if you want to be able to run programs and scripts that reside in your own $HOME/bin via the <Alt>+<F2> you may have to do some configuration on your own, as sometimes desktops do not have this preconfigured.
Edit or create
$HOME/.xsessionrc
and add into it the following:
if [ -d "$HOME/bin" ]; then {
PATH=$HOME/bin:${PATH##$HOME/bin:}
}; fi
export PATH
Log out and log back into X and try to run the program by invoking
<Alt>+<F2>
and typing the name of your program or script and pressing
<Enter>

