Setup network interface in linux systems

Κάποιες χρήσιμες εντολές για το σετάρισμα κάρτας δικτύου (π.χ. eth0) σε περιβάλλον linux.

• View:  ifconfig -a (ή eth0)

• Assign ip address to interface: ifconfig eth0 192.168.1.102 netmask 255.255.255.0 up

ifconfig’s syntax and command layout:

ifconfig <interface> <ip_address> [ netmask <netmask> ]

Where:
<interface> = the network interface you want to configure (eth0, eth1… and so on)
<ip_address> = the ip address you want to assign to the interface (example:  1.1.1.1)
<netmask> = the subnet mask of your assigned network (example: 255.255.255.0)

• Gateway:  route add default gw 1.1.2.2 eth0

route’s syntax and command layout:
route [add default gw] <ip_address> <interface>

Where:
[add default gw] = Sets up a route to add a default gateway for a network interface
<ip_address> = the ip address of the network gateway
<interface> = the network interface you are setting up a route for on your machine

• Nameservers (/etc/resolv.conf)
  

Κάνουμε edit το αρχείο /etc/resolv.conf με την εντολή e3 /etc/resolv.conf ή vim /etc/resolv.conf

Once you have the file open for editing, you will need to type this line for EACH DNS server address you want to enter:

nameserver <ip_address>

So, we would need to type this into the /etc/resolv.conf file:

nameserver 3.3.3.1
nameserver 3.3.3.2