ifconfig -a |
Lists the IP address and other detailed information about the NIC in your Linux server. |
hostname |
Displays the hostname of your server. |
dig |
Displays host information about your server |
netstat -lnp | grep program
netstat -lnp | egrep 'program|program|...' |
Lists the port numbers in use by one or more programs. It is also a handy command for checking to see whether the specified programs are currently running. |
ping IP_address_or_hostname |
Checks to see if the specified server is responding on the network. |