Is it possible to use an Application or bash script as the screensaver?
I would to like to run a bash script pmatrix or App (iTerm) as the screensaver?
I'm on 10.6.8.
If I understand you correctly, that program should do what you want – at least start a normal application:
This is a simple screen saver for Mac OS X version 1.3+ that launches a regular Mac application, or a Unix executable, of your choice when the screen saver starts.
Alternatively to slhck's answer, you can use ScriptSaver, since, if you have
Require password after sleep or screen saver begins enabled after IIRC OS X
10.7 you'll otherwise not see through and get a black screen (I'm on
10.8.5). Here's an example of using it to launch
tell application "iTerm" to create window with profile "Hotkey Window" command "top"
tell application "iTerm" close front window quit end tell