Run Program from Browser/File Manager

[gdoermann]

Ok, I am pretty new to Linux, and I am having a problem finding programs from the File Explorer. I am currently using Ubuntu.

The real problem I am having is that when I download a file (such as a torrent) and I want to open it with a different program than the default (I want KTorrent instead of BitTorrent). When I pick choose program it takes me to a file explorer. I type in the name of the program (KTorrent) and it says:

"The application you chose ("(null)") could not be found. Check the file name or choose another application."

I get the same message when I copy the command from the link (torrent %i %m -caption "%c" %u) and try to execute that.

So, where is the directory of executables? Where do I need to point Firefox? And how do I change the default for opening different file types? I tried "Preferred Applications" but this only lets me change my browser, email client, and terminal emulator.

[objuan]

First firefox is not really suited to be a file manager although it will browse
directories. If your going to execute files and so on I would recommend
Konqueror for KDE and Nautilus for Gnome.
Most all of the executables are in /usr/bin

[rcgreen]

Unfortunately, this feature is not very well designed. You must
already know where the application's executable is in
order to tell the file manager that this is the app to open a particular
type of file. I hope it improves in the future.

[gdoermann]

Objuan: I'm not trying to execute a file from Firefox, just set a file to open with a specific program when I download it in firefox.

Does anyone know where KTorrent keeps its executable and what it is called?

[Juan Pablo]

The exectuable for most programs is its name on /usr/bin

/usr/bin/ktorrent

But some KDE programs use
/usr/kde/<your version>/bin