ifconfig and ip commands

---

• ifconfig is part of the legacy net-tools package
  • deprecated on most modern Linux distributions
  • can still be safely used to report network interface configurations
• net-tools is replaced by iproute2 package
  • ip command has options for managing routes as well as the local interface configuration
  • ip addr shows current network address configuration
  • ip addr show dev eth0 reports a single interface only
  • ip link shows the status of interfaces
  • ip -s link reports interface statistics
  • ip link set eth0 up|down enables or disables an interface
  • ip addr add|delete can be used to modify IP address configuration
    • only apply to the running configuration, are not persistent