Restart logged in user politely after policy run

I run into this kind of stuff frequently it seems these days. You can try adding the following lines to your script. I find myself needing to use this more and more, especially under Mavericks.

loggedInUser=$( ls -l /dev/console | awk '{print $3}' )
loggedInPID=$( ps -axj | awk "/^$loggedInUser/ && /Dock.app/ {print $2;exit}" )

***<cocoadialog line goes here>***
if [ "$rv" == "1" ]; then
     echo "User selected Restart"
     /bin/launchctl bsexec "${loggedInPID}" sudo -iu "${loggedInUser}" "/usr/bin/osascript -e 'tell app "System Events" to restart'"
***<remainder of script goes here>***

@mm2270 Thanks. It seems to work when run as root in terminal, but still having trouble with it as a check in policy. I'm going to keep playing with it tho. Also, i may be getting greedy here, but i think the nicer way to do the restart would be to ask for confirmation first. The following code run from terminal as the logged in user works nicely:

#!/bin/bash
osascript -e 'tell application "loginwindow"
«event aevtrrst»
end tell'

I'm not exactly sure why, but the following code work with the "Recurring Check-in". I think the only thing i changed was having it use the aevtrrst instead of plain restart.

#!/bin/bash

CD="/opt/local/CocoaDialog.app/Contents/MacOS/CocoaDialog"

rv=`$CD msgbox --title "Restart Computer Please" --text "$4 has been installed on your computer and requires a restart" 
--informative-text "Click Restart to restart now. Click Later to restart at a later time." 
--no-newline --button1 "Restart" --button2 "Later" --float`
if [ "$rv" == "1" ]; then
echo "User selected Restart"
osascript -e 'tell application "loginwindow"
«event aevtrrst»
end tell'
elif [ "$rv" == "2" ]; then
echo "User selected Later"
exit
fi

This problem is driving me a bit nuts. I thought i had it squared away with the last change, but then i started to have that -10810 error again. I manually restarted my Mac and let the Recurring Check-in run the script again and it started to work again. So, i'm thoroughly confused. At any rate, i made a modification to the script so that it doesn't run at the login window and shortened the osascript to one line. I'll just leave it at that. Not sure if it will be reliable or not.

#!/bin/bash

CD="/opt/local/CocoaDialog.app/Contents/MacOS/CocoaDialog"
loggedInUser=$(ls -l /dev/console|cut -d' ' -f4)
if [ "$loggedInUser" != 'root' ]; then # Check if at the login window, if it is, the following code is skipped
#### CocoaDialog message box asking for the user to select restart
rv=`$CD msgbox --title "Restart Please" 
--text "$4 has been installed and requires a restart" 
--informative-text "It is important that you select Restart, but you may select Later to restart at a more convenient time." 
--no-newline --button1 "Restart" --button2 "Later" --float`
#### If the user selects restart, an apple script runs to run the Apple restart command. Gives the user a minute to cancel restart.
 if [ "$rv" == "1" ]; then
  echo "User selected Restart"
  osascript -e 'tell application "loginwindow" to «event aevtrrst»'
 elif [ "$rv" == "2" ]; then
  echo "User selected Later"
  exit
 fi
else
 echo "No User logged in. CocoaDialog not necessary"
fi