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ip command

Linux route Add Command Examples

I am a new Linux user. How do I add a new or default gateway using route command on Linux operating systems? How can I use route command to show or set a new route on Linux based server or desktop system?
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How do I configure networking or network interface card on HP Debian Linux U1 Server?
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I've recently installed Debian Linux 4.0 on my server and Ubuntu Linux 7.04 on Laptop. I would love to have a multiple IP address that I can use for verity of purposes. I would like to bind 4 IP's to the 'eth0' device or NIC. How do I achieve this?
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Debian / Ubuntu Linux Setting a Default Gateway

Q. How do I setup a default gateway on Debian or Ubuntu Linux? My router IP is 192.168.1.254 and I'd like to setup this as a default gateway for Debian Linux.

A. You can use command line tool such as
a] ip command - show / manipulate routing, devices, policy routing and tunnels

b] route command - show / manipulate the IP routing table

c] Save routing information to a configuration file so that after reboot you get same default gateway.

ip command to set a default router to 192.168.1.254

Login as the root and type:
# ip route add default via 192.168.1.254
OR
$ sudo ip route add default via 192.168.1.254

route command to set a default router to 192.168.1.254

Login as the root and type:
# route add default gw 192.168.1.254
OR
$ sudo route add default gw 192.168.1.254

Save routing information to a configuration file /etc/network/interfaces

Open /etc/network/interfaces file
# vi /etc/network/interfaces
OR
$ sudo vi /etc/network/interfaces
Find eth0 or desired network interface and add following option
gateway 192.168.1.254
Save and close the file. Restart networking:
# /etc/init.d/networking restart
OR
$ sudo /etc/init.d/networking restart

Bash Shell Command to Find or Get IP address

How do I find out my Linux / UNIX system ip address, subnet and related networking information from a command prompt?
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Ubuntu Linux: Determine Your IP Address

I am a new Ubuntu Linux user. How do I find out my IP address in Ubuntu Linux? How to find my own IP address in Ubuntu Linux using command line?
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HowTo: Determine an IP Address My Linux Server

I am a new Linux system user. How do I find out the IP address of Linux server? How do I determine the IP address of Linux server using command line options?
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