Case

#!/bin/sh
 
if [ "`snmpget -v 1 -c public des IF-MIB::ifAdminStatus.12 | grep up`" ]
then
        echo "disabling port 12.."
        snmpset -v 1 -c private des IF-MIB::ifAdminStatus.12 i 2 > /dev/null
else
        echo "enabling port 12.."
        snmpset -v 1 -c private des IF-MIB::ifAdminStatus.12 i 1 > /dev/null
fi