Make OS agnostic

Changed instances of “macOS Sierra” to $macOSname, which is specified
with $7 in the JSS.

macOSUpgrade.sh

@@ -31,7 +31,7 @@
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 #
 # This script was designed to be used in a Self Service policy to ensure specific
-# requirements have been met before proceeding with an inplace upgrade to macOS Sierra,
+# requirements have been met before proceeding with an inplace upgrade of the macOS,
 # as well as to address changes Apple has made to the ability to complete macOS upgrades
 # silently.
 #
@@ -47,7 +47,7 @@
 # Written by: Joshua Roskos | Professional Services Engineer | Jamf
 #
 # Created On: January 5th, 2017
-# Updated On: September 8th, 2017
+# Updated On: September 16th, 2017
 #
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
@@ -59,13 +59,13 @@
 userDialog=0
 
 ##Title to be used for userDialog (only applies to Utility Window)
-title="macOS Sierra Upgrade"
+title="$7 Upgrade"
 
 ##Heading to be used for userDialog
-heading="Please wait as we prepare your computer for macOS Sierra..."
+heading="Please wait as we prepare your computer for $macOSname..."
 
 #Specify path to OS installer. Use Parameter 4 in the JSS, or specify here
-#Example: /Applications/Install macOS Sierra.app
+#Example: /Applications/Install macOS High Sierra.app
 OSInstaller="$4"
 
 ##Version of OS. Use Parameter 5 in the JSS, or specify here.
@@ -77,17 +77,21 @@ version="$5"
 #Example: download-sierra-install
 download_trigger="$6"
 
+#Title of OS
+#Example: macOS High Sierra
+macOSname="$7"
+
 ##Title to be used for userDialog
 description="
 This process will take approximately 5-10 minutes.
 Once completed your computer will reboot and begin the upgrade."
 
-#Description to be used prior to downloading Sierra
-dldescription="We need to download macOS Sierra to your computer, this will \
+#Description to be used prior to downloading the OS installer
+dldescription="We need to download $macOSname to your computer, this will \
 take several minutes."
 
 ##Icon to be used for userDialog
-##Default is macOS Sierra Installer logo which is included in the staged installer package
+##Default is macOS Installer logo which is included in the staged installer package
 icon="$OSInstaller/Contents/Resources/InstallAssistant.icns"
 
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
@@ -120,32 +124,32 @@ else
     /bin/echo "Disk Check: ERROR - ${freeSpace%.*} Bytes Free Space Detected"
 fi
 
-##Check for existing Sierra installer
+##Check for existing OS installer
 if [ -e "$OSInstaller" ]; then
   /bin/echo "$OSInstaller found, checking version."
   OSVersion=`/usr/libexec/PlistBuddy -c 'Print :"System Image Info":version' "$OSInstaller/Contents/SharedSupport/InstallInfo.plist"`
   /bin/echo "OSVersion is $OSVersion"
   if [ $OSVersion = $version ]; then
-    downloadSierra="No"
+    downloadOS="No"
   else
-    downloadSierra="Yes"
+    downloadOS="Yes"
     ##Delete old version.
     /bin/echo "Installer found, but old. Deleting..."
     /bin/rm -rf "$OSInstaller"
   fi
 else
-  downloadSierra="Yes"
+  downloadOS="Yes"
 fi
 
-##Download Sierra if needed
-if [ $downloadSierra = "Yes" ]; then
+##Download OS installer if needed
+if [ $downloadOS = "Yes" ]; then
   /Library/Application\ Support/JAMF/bin/jamfHelper.app/Contents/MacOS/jamfHelper \
       -windowType utility -title "$title"  -alignHeading center -alignDescription left -description "$dldescription" \
       -button1 Ok -defaultButton 1 -icon "/System/Library/CoreServices/CoreTypes.bundle/Contents/Resources/SidebarDownloadsFolder.icns" -iconSize 100
   ##Run policy to cache installer
   /usr/local/jamf/bin/jamf policy -event $download_trigger
 else
-  /bin/echo "macOS Sierra installer with $version was already present, continuing..."
+  /bin/echo "$macOSname installer with $version was already present, continuing..."
 fi
 
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
@@ -202,7 +206,7 @@ EOF
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 
 ##Caffeinate
-/usr/bin/caffeinate -dis & 
+/usr/bin/caffeinate -dis &
 caffeinatePID=$(echo $!)
 
 if [[ ${pwrStatus} == "OK" ]] && [[ ${spaceStatus} == "OK" ]]; then
@@ -228,8 +232,8 @@ else
     /bin/rm -f /Library/LaunchDaemons/com.jamfps.cleanupOSInstall.plist
 
     /bin/echo "Launching jamfHelper Dialog (Requirements Not Met)..."
-    /Library/Application\ Support/JAMF/bin/jamfHelper.app/Contents/MacOS/jamfHelper -windowType utility -title "$title" -icon "$icon" -heading "Requirements Not Met" -description "We were unable to prepare your computer for macOS Sierra. Please ensure you are connected to power and that you have at least 15GB of Free Space.
-    
+    /Library/Application\ Support/JAMF/bin/jamfHelper.app/Contents/MacOS/jamfHelper -windowType utility -title "$title" -icon "$icon" -heading "Requirements Not Met" -description "We were unable to prepare your computer for $macOSname. Please ensure you are connected to power and that you have at least 15GB of Free Space.
+
     If you continue to experience this issue, please contact the IT Support Center." -iconSize 100 -button1 "OK" -defaultButton 1
 
 fi