A snmpwalk basically allows you to walk out all the SNMP OIDs for a device.  The following command shows all SNMP data that can be acquired on “localhost”.  You can change “localhost” to an ip address or hostname if you want to view SNMP data on a remote machine.

snmpwalk -v 2c -c public localhost

The above command starts an snmpwalk against “localhost”, using SNMP version “2c”, and the community string “public”.  You should change the SNMP version and community string to what ever you have setup on your network.

If you just want to view one OID then you can just append that OID to the end of the above command.

snmpwalk -v 2c -c public 192.168.1.58 1.2.840.10036.3.1.2.1.4