update

optional/enable_rc.local.sh

@@ -7,8 +7,8 @@ exit 0
 EOF
 sudo cp /tmp/rc.local /etc/
 sudo chmod +x /etc/rc.local
-sudo systemctl disable rc-local
-sudo systemctl disable rc.local
+sudo systemctl disable rc-local >/dev/null 2>&1
+sudo systemctl disable rc.local >/dev/null 2>&1
 fi
 
 if ! [ -f /lib/systemd/system/rc-local.service ]
@@ -37,5 +37,5 @@ GuessMainPID=no
 EOF
 
 sudo cp /tmp/rc-local.service /lib/systemd/system/rc-local.service
-sudo systemctl daemon-reload
+sudo systemctl daemon-reload >/dev/null 2>&1
 fi