Add --noninteractive switch

install.sh

 #!/bin/bash
 
+set -e
+
 if [ $( id -u $(whoami) ) != 0 ]; then
   echo "Sorry, this must be run as root."
   exit 1
 fi
 
+noninteractive=0
 codename=$( if ! which lsb_release > /dev/null ; then grep ^VERSION= /etc/os-release | cut -d \( -f 2 | cut -d \) -f 1 ; else lsb_release -c | cut -f 2 ; fi )
-
-case "x$1" in
-  "x") version="$codename";;
-  "x--testing") version="$codename-testing" ;;
-  *) echo "Unknown parameter: $1"; exit 1 ;;
-esac
+version=$codename
+UNHANDLED=()
+
+while [ $# -gt 0 ]; do
+  case $1 in
+    --testing)
+      version="$codename-testing"
+      shift
+    ;;
+    --noninteractive)
+      noninteractive=1
+      shift
+    ;;
+    *)
+      UNHANDLED+=("$1")
+      shift
+    ;;
+  esac
+done
+if [ "x$UNHANDLED" != "x" ]; then
+  echo "Error: Unknown parameter '$UNHANDLED'"
+  exit 1
+fi
 
 echo
 echo "-----------------------------------------------------------------------"
-echo "                      Sympl Installer     v0.5"
+echo "                      Sympl Installer     v0.6"
 echo "-----------------------------------------------------------------------"
 echo
 echo "This script will help you install Sympl on a Debian Linux server with"
@@ -66,7 +86,7 @@ if [ "$(find /etc/apt/sources.list.d/ -mindepth 1 -maxdepth 1 -type f -name 'sym
 fi
 
 echo -n "Adding repository to apt..."
-echo "deb http://packages.mythic-beasts.com/mythic/ $version main" > "/etc/apt/sources.list.d/sympl_$version.list"
+echo "deb http://packages.mythic-beasts.com/mythic/ $version main" > "/etc/apt/sources.list.d/sympl_$codename.list"
 echo "OK"
 
 echo -n "Updating apt..."
@@ -74,22 +94,26 @@ apt-get -qq update
 echo "OK"
 
 echo "Installing Sympl..."
-echo "Starting in 5 seconds - Ctrl-C to cancel!"
-sleep 5
+if [ $noninteractive == 0 ]; then
+  echo "Starting in 5 seconds - Ctrl-C to cancel!"
+  sleep 5
+fi
+
 apt-get -y install --install-recommends sympl-core
 
 if [ $? != 0 ]; then
   echo "Something went wrong. Exiting."
-  exit 0
+  exit 1
 fi
 
-clear
-echo -n "Thanks for installing..."
-/etc/update-motd.d/00-sympl-banner
+if [ $noninteractive == 0 ]; then
+  clear
+  echo -n "Thanks for installing..."
+  /etc/update-motd.d/00-sympl-banner
 
-read -n1 -p 'Press any key for important information...'
+  read -n1 -p 'Press any key for important information...'
 
-echo "
+  echo "
 
 
                   Important Information - Read This Now!
@@ -116,10 +140,12 @@ echo "
 
 "
 
-read -n1 -p 'Press any key to set the new password...'
+  read -n1 -p 'Press any key to set the new password...'
 
-echo
-echo "Setting new password for user 'sympl':"
-passwd sympl
+  echo
+  echo "Setting new password for user 'sympl':"
+  passwd sympl
+
+fi
 
-echo "Done!"
+echo "Sympl install completed!"
\ No newline at end of file