I like long form version. It helps me remembering what it does and why. Eg: `iptables --insert INPUT --protocol tcp --jump ACCEPT` was more helpful to me than `

I like long form version. It helps me remembering what it does and why. Eg: `iptables --insert INPUT --protocol tcp --jump ACCEPT` was more helpful to me than `iptables -i INPUT -p tcp -j ACCEPT` when told how to allow TCP traffic. For everyday command like `ls -l` I don't mind but anything more serious I take a more cautious approach.