reading argument with -n option in the script

 Assuming this script name would be status_res.sh and the user needs to use arguments nodename which would give results specific to one server 

Code:

status_res.sh -n node1

Now how should I read this argument internally whichgets prefixed with -n option in the script since I would be using below command in script

Code:

crsctl status res -n nodenamw| grep -E "ora\.$DATABASE\.(.+)\.svc" | awk -F"." '{print $(NF-1)}

Best regards,

Vishal