Ubuntu blogs

What is SIP

The Basics

The Session Initiation Protocol (SIP) is a signalling protocol used for establishing sessions in an IP network. A session could be a simple two-way telephone call or it could be a collaborative multi-media conference session. The ability to establish these sessions means that a host of innovative services become possible, such as voice-enriched e-commerce, web page click-to-dial, Instant Messaging with buddy lists, and IP Centrex services.

Over the last couple of years, the Voice over IP community has adopted SIP as its protocol of choice for signalling. SIP is an RFC standard (RFC 3261) from the Internet Engineering Task Force (IETF), the body responsible for administering and developing the mechanisms that comprise the Internet. SIP is still evolving and being extended as technology matures and SIP products are socialised in the marketplace.

How to connect iPhone/iPod Touch (Using USB) in Karmic/Jaunty/Intrepid/Hardy

If you want iphone/ipod touch in ubuntu easy way is using iFuse program.iFuse allows you to mount an iPhone or iPod Touch under Linux using the USB cable. You can view and edit the files similar to a normal USB disk drive. iFuse does not require “jailbreaking” or voiding your warranty and works without needing extra software installed on the phone (such as `ssh`).

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Sabayon – Manage multiple GNOME user profiles

Sabayon is a system administration tool to manage GNOME desktop settings. Sabayon provides a sane way to edit GConf defaults and GConf mandatory keys: the same way you edit your desktop. Sabayon launches profiles in an Xnest window. Any changes you make in the Xnest window are saved back to the profile file,which can then be applied to user’s accounts.

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my gateway 3018gz sound driver

i reformatted my gateway 3018gz(or m320?)notebook and reinstalled windows xp on it but i lost every drivers and was able to download all except the sound. i have tried every means but to no avail.

can someone assist me in locating the sound driver for my gateway 3018gz notebook computer?

Rectifying “Either the superblock or the partition table is likely to be corrupt”Error in Linux

In a Linux computer, partition table and superblock are two most important data structures. The superblock keeps record of the file system characteristics including its size, empty and filled block, location and size of Inode tables, block size and status. The partition tables stores all required information about hard drive primary partitions. When any of these data structure gets damaged, hard drive become inaccessible and all of the stored data can not be accessed. This behavior of Linux operating system results into critical data loss situations. At this point, to retrieve data your data from affected drive, you are required to carry out Linux Data Recovery using appropriate solutions.

In a practical scenario, when you run fsck on Linux hard drive to detect and fix file system errors, you might come across below given error message:

“The file system size (according to the superblock) is xxx

The physical size of the device is xxx

acer 4710Z wifi driver for ubuntu 8.04


I have acer 4710Z laptop I have install Ubuntu 8.04 but I have Wifi driver problem, wifi is not working on my laptop...

Pls Help Me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Kismet – An 802.11 wireless network detector, sniffer, and intrusion detection system

Kismet is a 802.11b wireless network sniffer. It is capable of sniffing using almost any supported wireless card using the Airo, HostAP, Wlan-NG, and Orinoco (with a kernel patch) drivers.Kismet identifies networks by passively collecting packets and detecting standard named networks, detecting (and given time, decloaking) hidden networks, and infering the presence of nonbeaconing networks via data traffic.

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running sudo command

After confugring the /etc/sudeors file i am not getting the privellege to run the administrator commands on normal user accounts
Please help me out...........


How to enable sudo
i want to know the steps

Install Ubuntu kernel updates without rebooting using Ksplice Uptrack

Ksplice Uptrack is an update service for the Linux kernel; it automatically delivers security and reliability improvements to your machine, without the disruption of rebooting.

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Resolving Ext3 Error: No journal on filesystem

Ext3 is a journaled file system and maintains a journal file to prevent instances of metadata corruption due to unexpected power outage. Due to its wide testing base and relative simplicity, the file system is considered to be safer than its counterparts. But it is not completely immune to crashes. At times, when using a Ext3 formatted drive, you might receive errors suggesting that system doesn't find any journal on the file system. As a solution, you might be compelled to reinstall the system. In such situations, you need to check the status of your backup that should be valid and completely updated to restore information from. But if you observe any backup related issues, Linux Recovery utilities should be used.

For an instance, while attempting to mount your Linux based hard drive, you might come across the similar error message:

“ext3: no journal on filesystem”

WineXS – Simple graphical environment to configure Wine

Wine is an Open Source implementation of the Windows API on top of X and Unix.Think of Wine as a compatibility layer for running Windows programs. Wine does not require Microsoft Windows, as it is a completely free alternative implementation of the Windows API consisting of 100% non-Microsoft code,
however Wine can optionally use native Windows DLLs if they are available. Wine provides both a development toolkit for porting Windows source code to Unix as well as a program loader, allowing many unmodified Windows programs to run on x86-based Unixes, including Linux, FreeBSD, and Solaris.

WineXS allows you to easily configure Wine by installing and removing software, editing the registry,managing files, and more.

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Google Gears For 64bit Linux & Firefox

Google has a fantastic little add on called Gears, unfortunately there is no support from Google to install Google Gears on your 64bit Linux machine. However, the good news is that Google was kind enough to provide Gears as open source! Users of Gmail, Wordpress, Greasemonkey and Wikipedia can greatly benefit from this little gem. Gears is a extension that allows you to take commonly used web applications off line. Storing essential components locally on your computer, making them as quick as can be. More on Google Gears can be found here.

There have been a few different people to release a 64bit compatible Gears add on, however some have issues and some don't. So far, I've found the best one to be written by a nice guy who calls himself Niels. Niels of Niels` blog has a link here on his blog.

Oracle installation issue.

I am trying to install oracle and I am getting below error...

root@viswan-laptop:/home/viswan/sware# rpm -ivh oracle-xe-
error: Failed dependencies:
glibc >= 2.3.2 is needed by oracle-xe-
libaio >= 0.3.96 is needed by oracle-xe-
/bin/sh is needed by oracle-xe-

1) how to get those glibc and libaio?

Pls help.


edit permission

I am new to Ubuntu, I want to change /etc/bash.bashrc file.
I googled it and I got by giving 'gksudo nautilus' in Alt+F2 window, we can get root window and change the file permission.

my doubt is:
1) I want to change the file permission from (terminal) command line; not using gksudo... option. How to do this?

Pls guide.


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