Is there any script that daily reset the whole system. I want to use it in my testing lab.
if you reset all config, your script will be gone also. or you meant rebooting?
Yes please. I need reset script.
So your question is still not clear 
Reset (lose config) — or — Reboot (restart system)
I want to use this script just for testing. I want to check this script in my lab with other scripts. I want to use it as scheduler run script. I know every configuration will be finished by using it . I want to run it in specific time.
It’s a simple question. What do you want this script to do. Choose one:
Reset (lose config) — or — Reboot (restart system)
Ok let me tell you in details.
I want to use this script in lab. I am learning it. I want to install this script in system and make training or experiments the whole day. But when I come to the lab next day I want all the routers in reset mode. I hope I will be able to explain my idea.
If you reset it daily, it’ll wipe out the script that resets the router to defaults (because that script isn’t part of the defaults!), so it will only do it once. Just get in the habit of running /sys reset-configuration when you start each day.