How do I convert this AppleScript to osascript? - applescript

Question

I have written an AppleScript and want to convert it to an osascript so I can run it on launch using launchd. Is there any way I can convert this to osascript or do I have to rewrite the whole script as an osascript? If it can't be done is there at least a way to run it as osascript in the terminal? Thank you!
on idle
tell application "System Events" to ¬
if exists process "Launchpad" then run script
tell application "Launchpad"
delay 0
tell application "System Events" to keystroke "b" using {control down, option down, command down}
delay 0
tell application "System Events" to keystroke "b" using {control down, option down, command down}
delay 0
tell application "System Events" to keystroke "b" using {control down, option down, command down}
delay 0
end tell
end idle

Answer 1

If you only need to run it once per second or less frequently, you could save it as a normal script:
tell application "System Events"
if not (exists process "Launchpad") then return
repeat 3 times
keystroke "b" using {control down, option down, command down}
end repeat
end tell
And repeat running the script with launchd:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC -//Apple Computer//DTD PLIST 1.0//EN
http://www.apple.com/DTDs/PropertyList-1.0.dtd>
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.stackoverflow.11945633</string>
<key>ProgramArguments</key>
<array>
<string>osascript</string>
<string>/Users/username/Library/Scripts/script.scpt</string>
</array>
<key>StartInterval</key>
<integer>1</integer>
</dict>
</plist>
The property list has to be loaded manually with launchctl load ~/Library/LaunchAgents/com.stackoverflow.11945633.plist. Applying changes requires unloading and loading it.
Programs are sent a SIGKILL signal after 20 seconds by default. You can override the timeout by adding an ExitTimeOut key. See man launchd.plist.
The script doesn't actually work for changing the Launchpad background. Launchpad.app is just a dummy application that quits immediately when it's opened.
If you just want to change the background style, you can do it with defaults write com.apple.dock springboard-background-filter -int 2; killall Dock.