Set up static IP address
A not recommended way of setting a static IP address is
sudo ifconfig en4 inet 192.168.110.1 netmask 255.255.255.0
Since OSX has its own config in /Library/Preferences/SystemConfiguration/*, the better way of setting a static IP permanently is
networksetup -setmanual "Ethernet" 192.168.110.1 255.255.255.0 192.168.110.1
Set MAC address of interface
sudo ifconfig en0 ether aa:bb:cc:dd:ee:ff
Reset DNS Cache
sudo killall -HUP mDNSResponder
Show routing table
netstat -nr
Show ARP table
arp -a
Scan Wifi Networks
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -s