You may set up production mode using:
bench setup production frappe
(frappe is the non-root username. You may change it to frappe-erp, frappe-user or whatever you like).
Make frappe a sudo user.
sudo usermod -aG sudo frappe
Give frappe a password
sudo passwd frappe
Use frappe user to activate Erpnext / frapp
su - frappe
(enter the password of frappe that you gave in passwd frappe)
Note that the home directory has changed to /home/frappe
cd frappe-bench
run your bench commands in this directory which is now /home/frappe/frappe-bench.
(I see that your home directory is still /home/satish)
Caution: frappe is an overused user name for this purpose. It is recommended that you use another user name - for example: erpsatish. In this case, you use
bench setup production erpsatish