It's pretty simple for a standard user to install plug-ins for themselves, but there might be situations when installing a needed plugin for all users might be more desirable, if only to eliminate a few calls to support. I recently worked this problem out by pushing a .safariextz file to each user's library and running a unix command to add an array to the existing Extensions.plist. When I place the command into a shell script and add it to Casper Admin, the shell script looks like this:

```

!/bin/sh

defaults write ~/Library/Safari/Extensions/Extensions.plist 'Installed Extensions' -array-add '<dict> <key>Added Non-Default Toolbar Items</key> <array/> <key>Archive File Name</key> <string>Okta Secure Web Authentication Plug-in.safariextz</string> <key>Bundle Directory Name</key> <string>Okta Secure Web Authentication Plug-in.safariextension</string> <key>Enabled</key> <true/> <key>Hidden Bars</key> <array/> <key>Removed Default Toolbar Items</key> <array/> </dict>'
```

Everything deploys properly in Casper, but the shell script doesn't actually run. It returns an exit code of 0, but the Extension.plist remains unchanged. However, if I take this same command and paste it into Unix field in Apple Remote Desktop, running it as a current user, the Extension.plist is modified perfectly and the plug-in shows up in Safari as desired. Ideally, I could use Casper instead and run this once per user at log in, which would ensure a smooth install for everyone. I see that some people have had issues installing plug-ins silently and I see others having issues running a script as the current console user. I guess I'm trying to solve both, but so far, I've been unsuccessful.