VS
-bash: ip: command not found
$ ifconfig |grep UP
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000
Size: a a a
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