diff --git a/start b/start
index aa00051..ecf7eab 100755
--- a/start
+++ b/start
@@ -15,9 +15,23 @@ if [[ -z "$DEBUG" ]]; then
     DEBUG=
 fi
 
+
+# Sudo prompt
+if [[ -n "$SUDO" ]]; then
+    true
+elif [[ -t 1 ]]; then
+    SUDO=sudo
+else
+    export SUDO_ASKPASS=/usr/lib/ssh/ssh-askpass
+    SUDO='sudo --askpass'
+fi
+if ! which "$SUDO" >/dev/null 2>&1; then
+    SUDO=sudo
+fi
+
 set -u
 
-SUDO=sudo
+cd "$(dirname "$0")"
 
 $SUDO true