[Flow] Linux Beginner > Can't access ./flow

[Axel Wüstemann | Qbus Werbeagentur]

Hello,

sorry for this maybe stupid question. I'm just switched from windows to 
ubuntu so I'm still a bit unfamiliar with linux.

In a terminal I'm in my project folder htdocs/<project>. With ls -l I 
see the flow-Script, but with ./flow I get ": Datei oder Verzeichnis 
nicht gefunden"

What do I wrong?

Thanks, Axel