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Is there a way or a 3rd party application which would let me specify, for example, that I want it to send a keyboard event (so that it has the same effect as physically hitting the key on the keyboard) every 5 seconds?

So, for example, I could tell it to hit K every 5 seconds, 15 times in total?

Basically, I'm looking for something like AutoHotkey but for OS X.

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2 Answers 2

up vote 2 down vote accepted

I found a way to do this in a bash script:

#!/bin/sh
# A simple script that simulates hitting the key specified on OS X
# Based on http://stackoverflow.com/a/9418346/363078

echo "tell application \"System Events\" to keystroke \"$1\"" | osascript

Save as hitkey, chmod +x hitkey, hitkey k to hit K.

From there it's simple to use Automator to loop over the script several times or make an iCal alarm to initiate the script at a specific time.

Automator document types

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Doesn't that miss the whole "repeat every 5 seconds for a total of 15 times" part? –  Daniel Lawson Sep 13 '12 at 16:35
    
I didn't know about the echo "script" | osascript syntax - I've always used osascript -e "script". So you get +1 for that. –  CajunLuke Sep 13 '12 at 16:53
    
@DanielLawson: yes, but having the shell script it's simple to loop it however you want. –  houbysoft Sep 13 '12 at 17:20

Here's an AppleScript to do what you want:

set i to 0
repeat while i < 15
    set i to i + 1
    delay 5
    tell application "System Events" to keystroke "k"
end repeat

You can inline it in a shell script like this:

echo "set i to 0
repeat while i < 15
set i to i + 1
delay 5
tell application \"System Events\" to keystroke \"k\"
end repeat" | osascript

(Thanks to @houbysoft for the echo "script" | osacript syntax!)

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