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Using programs and commands that do not have a graphical user interface (GUI) but are rather controlled by typing text commands into a terminal program, or shell.

2 votes

How to flash screen from command line

For others, one alternative I have found is to use the brightness command line tool, available via homebrew ( You can find instructions on how to install it from http://brew.sh ). Link to discussion: …
studgeek's user avatar
  • 4,441
8 votes
4 answers
6k views

How to flash screen from command line

Is there a way to flash the screen from the command line? I am looking for the same effect that Accessibility does for "Flash the screen when an alert sound occurs", but I don't want it for every aler …
studgeek's user avatar
  • 4,441
125 votes

Update bash to version 4.0 on OSX

As @William said in his answer, Apple does not provide bash 4 due to GPL restrictions. You can install bash 4+ however and also can make it your default shell (including for Terminal and iTerm2) by do …
studgeek's user avatar
  • 4,441