Common Mac/unix/linux Commands

1. Query IP address ifconfig

2. Find port assignments for applications on the server

grep telnet/etc/services (telnet)

Telnet using the TCP/UDP port number 23

grep domain/etc/services (domain),

Telnet	Ftp	Tftp	http	Https	Snmp	Domain	Echo	Discard	Daytime	Chargen	Time
23	20	69	80	443	161	53	7	9	13	19	37

3.ping [IP Address], test the network for connectivity, Echo request message to destination and report whether you receive the desired ICMP echo (ICMP echo response)

Ping 163.com

4.tracert [IP Address], tracert (trace route) is a route trace utility that determines the path taken by the IP datagram access target

Tracert sina.com

Common Mac/unix/linux Commands