Make config of hostname a setup step

modules/02-system-settings.sh

@@ -65,6 +65,24 @@ function configureMacOSFirewall() {
 	${cmd} --setallowsignedapp on
 }
 
+function setComputerName() {
+	scutil --set ComputerName "${hostname}"
+	scutil --set HostName "${hostname}"
+	scutil --set LocalHostName "${hostname}"
+	systemsetup -setcomputername "${hostname}"
+	systemsetup -setlocalsubnetname "${hostname}"
+}
+
+function configureComputerHostname() {
+	local currentComputerName="`scutil --get ComputerName`"
+	if [[ "${currentComputerName}" != "${hostname}" ]]; then
+		lop -- -i 'Hostname of computer has not been set.' -i "Will set to ${hostname}."
+		indicateActivity -- 'Set computer name' setComputerName
+	else
+		lop -- -i 'Hostname of computer seems to have already been set. Skipping.' -i "Hostname: $currentComputerName"
+	fi
+}
+
 function configure_system() {
 	lop -y h1 -- -i 'Configure System Settings'
 	indicateActivity -- 'Quitting System Preferences' quitSystemPreferences
@@ -73,6 +91,13 @@ function configure_system() {
 	indicateActivity -- 'Configuring login window' configureLoginWindow
 	indicateActivity -- 'Configure global umask' launchctl config user umask 027
 	indicateActivity -- 'Configure macOS firewall' configureMacOSFirewall
+	configureComputerHostname
+}
+
+function getQuestions() {
+	questions=(
+		'i: hostname=What shall the systems hostname be?'
+	)
 }
 
 function getUsage() {
@@ -80,11 +105,12 @@ function getUsage() {
 	read -r -d '' text <<- USAGE
 	Usage:
 	  $cmdName show-questions [<modkey> <modans>]...
-	  $cmdName [-v] [-d FILE]
+	  $cmdName [-v] [-d FILE] --hostname NAME
 
 	Set energy, network and basic preferences.
 
 	Options:
+	  --hostname NAME          Set NAME as current host's host name.
 	  -d FILE, --logfile FILE  Print log message to logfile instead of stdout.
 	  -v, --verbose            Be more verbose.
 	----