Multi monitor script works locally, not through jamf policy

[Tjernigan]

I have poured through all the threads and found a script that works locally to change the wallpaper of all monitors on a system if run locally. The script however, does not work when pushed through jamf. I get a successful message but not change in the wallpaper. The script I'm using is:

!/bin/bash

osascript -e 'tell application "System Events" to set picture of every desktop to ("/Users/shared/SISLogo/SIS_WP.jpg" as POSIX file as alias)'
exit 0
I have tried resetting permissions, using PPPC utility to ensure proper Jamf permissions. I get the user message when the script is run but no change to background. Anybody have an idea?

[mm2270]

The osascript portion must be run as the logged in user. Since Jamf Pro runs all scripts as root, it's failing.

Try this modification:

#!/bin/bash

loggedinuser=$(stat -f%Su /dev/console)
loggedinuid=$(id -u "$loggedinuser")

/bin/launchctl asuser "$loggedinuid" sudo -iu "$loggedinuser" /usr/bin/osascript -e 'tell application "System Events" to set picture of every desktop to ("/Users/shared/SISLogo/SIS_WP.jpg" as POSIX file as alias)'
exit 0

Also, when posting any kind of script here, be sure to select/highlight the entire script and click the >_ button in the post editing toolbar, so it encloses it in the script markdown and formats it properly for the forums.

[Tjernigan]

@mm2270 OMG thank you, thank you, thank you.
Out of curiosity on single monitor systems I had used the script:

!/bin/bash

sudo osascript -e 'tell application "Finder" to set desktop picture to POSIX file "/Users/shared/SISLogo/SIS_WP.jpg"'
exit 0

And it changed the wallpaper fine for the primary display. Why did the osascript work in this instance but not for multi monitors?

[mm2270]

If you're saying the second script above for single monitor systems worked as is when deployed from Jamf Pro, then I can't explain that. Generally speaking, when talking about most Applescript/osascript commands that manipulate the user space, they have to be run as the user and not as root. Maybe the single monitor instance operates a little differently, and root is able to make those changes. I'm not sure though.

[Tjernigan]

Ok. So now I am unable to get the request for permission box to not appear on the user machine. I have created a pppc permission for jamf.app, jamf, and jamf agent with all permissions allowed. I even downloaded the github pppc for system events and still the dialog box pops up. I have heard others having this issue and it's possibly a bug with Jamf?? anybody think anything else?

[maurits]

Have you looked at desktoppr with outset in stead of osascript? Less issues with PPPC imho.