[Ubuntu] How to Launch Network Proxy Properties in Terminal

I want to bypass System*Preferences*Network Proxy by using a command line interface in Terminal. After hacking Ubuntu Alt+F2 and command completion in Terminal for a while, I found the way how to launch Network Proxy Properties in Terminal. Here is the command line:

$ gnome-network-properties

Enjoy!

How to Check Ubuntu Version in Terminal

I just curious about how to check Ubuntu version via Terminal. Since I often remote a server and I don't know what version is. Here is the command:

lsb_release -a

Then it will print out some messages like this:

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.04
Release: 11.04
Codename: natty

So I has already know what Ubuntu version used in server. It is Natty. Enjoy!

Warning: Remote Host Identification has Changed!

When we remote a server using ssh, sometimes we get a warning message like this:

Warning: Remote Host Identification has Changed!

What should we do? Just follow a command below the warning.

ssh-keygen -f "/home/hudan/.ssh/known_hosts" -R server_ip_address

Enjoy :).

How to Upgrade to Natty

Usually, I upgrade my Ubuntu box by first changing source list file. Then issuing this two simple command in Terminal:

sudo apt-get update
sudo apt-get dist-upgrade

Unfortunately, when I upgrade my Maverick to Natty, those two don't work. Then I googled it and find simpler method. Here we go:

# Look for Update Manager menu. Then click Install Update button (it is located in bottom left of dialog box).

# Wait for approximately three hours (this is based on your internet speed)

# Restart your PC.

Welcome to the new look of Natty. Enjoy!

Network Proxy: Apply System-Wide

In several latest version of Ubuntu, we have Network Proxy Preferences menu. In this article, I want to show the effect of Apply System-Wide option. One of this effect is when we work in Terminal.

# Before applying system-wide proxy, try echoing proxy in Terminal and it will show nothing

echo $http_proxy

# After choosing this option, close Terminal. Then try echoing again and you will get message like this

http://username:password@proxy_ip_address:port/

It means you have applied proxy system-wide option. Enjoy!

Ubuntu Arabic Keyboard Layout

Just wanna share Arabic keyboard layout in Ubuntu. Maybe you want to print it or just to look at it :). Don't forget to click the image to enlarge.


Enjoy!

How to Set Skype Proxy in Ubuntu

Hi... we are still talking about proxy :). Now, we want to play Skype and we have to set proxy first. This how-to has been tested in Ubuntu Maverick Meerkat. Here we go:

# When you launch Skype, you will get icon in your top-right panel


# Right click it and choose Options

# Change proxy ip address, username, and password as appropriate (click image to enlarge)


We are done here :). Enjoy!

Export Proxy in Ubuntu Terminal

Before working with http proxy, you must set it first. When you are on terminal mode, here we go:

export http_proxy="http://proxy_ip_address:port"
export http_proxy_user=username
export http_proxy_passwd=password

Enjoy!