Simply exit process to restart.

index.js

@@ -521,7 +521,9 @@ function seq () {
 }
 
 function update (req, res, next) {
-	exec('sh ./scripts/update.sh')
+	exec('sh ./scripts/update.sh', (err, stdio, stderr) => {
+		process.exit()
+	})
 }
 
 function index (req, res, next) {

scripts/update.sh

@@ -3,5 +3,3 @@
 sudo -u pi -i<< EOF
 	cd /home/pi/intval3 && git pull
 EOF
-
-cd /home/pi/intval3 && sudo pm2 restart process.json