add tinc-update

tinc-update

@@ -0,0 +1,33 @@
+#!/bin/sh
+set -eu
+
+has() {
+  command -v "$1" >/dev/null 2>&1
+}
+
+die() {
+  echo $1 &>2
+  exit 1
+}
+
+if has git; then
+  echo "Git pull..."
+  git pull origin master
+else
+  die "git not found. install git to use this script"
+fi
+
+reload_tinc() {
+  echo "Reload tinc..."
+  sudo tinc -c . reload
+}
+
+if [[ $EUID -ne 0 ]]; then
+  if has sudo; then
+    reload_tinc
+  else
+    die "run this script as root"
+  fi
+else
+  reload_tinc
+fi