Shellscript to change a Systempreference?

Question

Hi there. I've written an applescript that checks a box in a systempreference pane using UI scripting.The script opens Systempreferences,makes "Security" the active preference pane and then checks/unchecks the first boolean. This is what I've got:
tell application "System Preferences"
activate
set current pane to pane "com.apple.preference.security"
tell application "System Events"
tell application process "System Preferences"
click checkbox 1 of window 1
end tell
end tell
end tell
Works like a charm.
I was wandering if there would be a terminal-command,that I could run through Applescript (do shell script blablabla) that would have the same effect,namely requirering a password for unlocking the screensaver?
Thanks in advance,
grtz,
me

Answer 1

I've installed a scripting addition from here:
http://www.latenightsw.com/freeware/PListTools/index.html
With this I can actually read the plist files in applescript directly and get the contents delivered in the result.
The script using the scripting addition is this:
tell application "Finder"
set myFolder to folder ("path:to:parent:folder") as string
read property list file (myFolder & "com.apple.screensaver.000393660b20.plist")
end tell
The result returned is this:
{|modulePath|:"/System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resou rces/Pictures Folder.saver", |idleTime|:0, |askForPassword|:0, |hotCorners|:{{"0", "1", "0", "0"}}, |lastPictureDirectoryChosen|:"/Library/Desktop Pictures/bluescreen", |moduleName|:"Pictures Folder", |previousModuleName|:"Pictures Folder"}
Could I just access the result and do some search&replace thing?
somehow like this?
if the result contains "|askForPassword|:0"
select "0" and change it to "1"
I think I can do something with text delimiters, could someone help me out?