X11

Mouse follow focus on OSX

I always configure my Linux window managers to use "focus follow mouse". Meaning, whichever window the mouse cursor is currently in, gets keyboard focus. This is not possible with most OSX applications, because of how they've designed the UI with one Menu bar etc. However, at least two apps. Terminal and the X11 server, can be configured to do just this. It's really easy:

$ defaults write org.x.X11 wm_ffm -bool true
$ defaults write com.apple.terminal FocusFollowsMouse -string YES

 

Hacking: 

xclip

I use more and more remote X11 applications now, and VNC, since I switched my desktop (and laptops) over to use OSX entirely. This works great. Sometimes, it can be a bit annoying to get the clipboards and selections to synchronize across windows, or even to just get a portion of a file from e.g. X11 into OSX. There's a very useful command for this, that can easily be scripted (and bound) to some key of your own preference. For example, to take the clipboard from an X11 app, and put it into the main selection buffer, you can do

$ xclip -o -selection clip | xclip -i

To put a portion of  a file into both the clipboard and the primary selection:

$ head -10 /etc/group | tee >(xclip) >(xclip -sel clip) > /dev/null

You can obviously make some convenience macros around this, or simple shell scripts.

Hacking: 

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