First, copy your .mib file into the directory where your script is located.

Then use snmpget in the following format:

snmpget [address] -c [community string] -v 1 -m [mib name] [object to scan]

Then use snmpwalk in the following format:

snmpwalk [address] -c [community string] -v 1 -m [mib name] [object to scan]