Closing a GUI window from the command line

I also struggle with knowing which window has focus (irrespective of how it got i).

I have switched on the glow feature of oxygen theme in KDE's plasma. I now have a different glow around active and inactive windows. I also set a matching title bar colour. Green for active, and red glow / gray title bar and border for inactive (but the borders are very thin).

It has made a big difference.

I also set meta+tab to lower window (and move focus to new top window). No animation, just simply the glow moves.

I then added an effect to move slide back windows: window move (temporarily out of the way) to let the other pass. This helps me keep track of where things have gone (a sub-conscious hint, linked to real world physics).

I chose KDE plasma for these features. (You can install it and probably start it (replacing cinnamon) without even logging out.)

Try open_with with the f or t flag:

open_with [application] [flags] [mode]

Open the selected files with the given application, unless it is omitted, in which case the default application is used. flags change the way the application is executed and are described in their own section in this man page. The mode is a number that specifies which application to use. The list of applications is generated by the external file opener "rifle" and can be displayed when pressing "r" in ranger.

Note that if you specify an application, the mode is ignored.

Flags give you a way to modify the behavior of the spawned process. They are used in the commands :open_with (key "r") and :shell (key "!").

 f   Fork the process.  (Run in background)
 c   Run the current file only, instead of the selection
 r   Run application with root privilege (requires sudo)
 t   Run application in a new terminal window