Add Favorite Server on OSX.sh

#!/bin/sh
#
# Modify Server Shortcuts, ©2013 David Koff
# script adds a server to the list appearing at Go -> Connect to Server
# result will appear for all > 500 user accounts.
# to create your own shortcuts, just change the variables:
#
# ServerName = the name of the server you'd like to appear in your list
# ServerURL = the actual URL to that server
#
# reference thanks to Mike and Rich:
# http://jamfnation.jamfsoftware.com/viewProfile.html?userID=1927
# http://derflounder.wordpress.com/2013/01/10/updating-server-bookmarks-in-com-apple-sidebarlists-plist/
#
# Created: 4.2013




#----------------------------------------------------------
#   Variables
#----------------------------------------------------------

# --- assignments ---
ServerName="Pubs Illustrations"
ServerURL="afp://athens-shared-server/Shared/Illustrations"

# --- executables ---
Plist="/usr/libexec/PlistBuddy"

#--- Set Logging
exec >> "/Library/Logs/Getty Installations.log" 2>&1

# --- computationals ---
date=`date "+%A %m/%d/%Y %H:%M"`
over500=`dscl . list /Users UniqueID | awk '$2 > 500 { print $1 }'`

#----------------------------------------------------------
#  Timestamp
#----------------------------------------------------------
echo "                                   "
echo "###################################"
echo "##### $SCRIPTNAME"
echo "##### `date "+%A %m/%d/%Y %H:%M"`"
echo "###################################"
echo "

# ---------------------------------------------------------------------------
#   Go to every user, back-up file, add new link, fix permissions
# ---------------------------------------------------------------------------
for i in $over500
do
    cd /Users/$i/Library/Preferences
    zip SidebarListsBackup.zip com.apple.sidebarlists.plist
    $Plist com.apple.sidebarlists.plist -c "Add :favoriteservers:CustomListItems:0 dict"
    $Plist com.apple.sidebarlists.plist -c "Add :favoriteservers:CustomListItems:0:Name string ${ServerName}"
    $Plist com.apple.sidebarlists.plist -c "Add :favoriteservers:CustomListItems:0:URL string ${ServerURL}"
    /usr/sbin/chown ${i}:staff /Users/$i/Library/Preferences/com.apple.sidebarlists.plist
done

exit 0