Linux with examples

Linus Torvalds Announced on the mailing list of the Linux Foundation out of the final version 3.2 of the Linux kernel. This release adds new features and SEVERAL interesting performance enhancements for the Ext4 file system, CFS scheduler, the TCP stack, as well as integration of new updates and drivers. Performance Improvements made to the Ext4 file system allow it to allocate blocks Easily Larger Than 4 KB to 1 MB of disk, Which Will result in Improved Performance When handling large files. The Btrfs file system IS no exception and mature in this version of the Kernel. The CFS scheduler (Completely Fair Scheduler) available with this version Incorporates the control function of bandwidth “bandwidth controller” to divide CPU resources in slices as Many as There Are Processes, and better control of processing power Allocated To Each task. The new algorithm “Proportional rate reduction” built Into the TCP stack and optimizations made to allow the TCP stack it now To Be In The faster recovery of lost packets After connecting. The transmission rate Can Be Automatically synchronized to the capabilities of network equipment. The Device Mapper (DM) to map a block device to Another significant Incorporates SEVERAL Improvements Such as support for the “thin provisioning” storage, making it possible, to dynamic allocation and fine. Support for a new architecture aussi HAS-been added. Finally, note the integration of the cryptographic subsystem verification EVM (Extended Verification Module), optimizations of the hash function SHA-1 Is Now for faster x86 -64.

Download the Linux 3.2 Kernel Source: click here to download

Numlock on ubuntu startup. To enable numlock on ubuntu start up.you need to install “numlockx“.

below is the command

$sudo apt-get install numlockx

Hope this will solve your problem

The Galaxy Tab 10.1 Samsung may be ”  oppressed  ”in some parts of the world, but that does not mean that the electronics giant South Korea will give up.  launched a new tablet called Galaxy Tab 750 in India. The Galaxy Tab 750 will run on Android Honeycomb 3.x that has been specially optimized for the tablets and has a thickness of only 8.6mm.

It seems that Samsung has learned much from his foray with the Galaxy S II and its slim design – this model has a Tegra processor 2 1GHz dual-core from NVIDIA, 1GB of RAM, support HSPA +, Wi-Fi and Bluetooth, GPS navigation , a 3 megapixel camera on the back cover and a 2 megapixel camera on the front panel, HD video recording (720p) and Full HD playback, 16GB of internal memory and a 7000mAh battery would have a range of about 9.

The Galaxy Tab 750 will own the Samsung TouchWiz user interface that will provide support for Live Panel, Mini Apps and different as the Social Forums and Readers Hub.

Arista Transcoder is a really cool video converter for GNOME.
It convert video from iPod, iPhone, PSP, Playstation 3 to Android, Nokia and DVD .
It supports MP4, WebM, Matroska, AVI, Ogg, FLV (codecs – video: H.264, VP8, MPEG4 / DivX, MPEG2, Theora, Flash Video / audio: AAC, Vorbis, MP3, FLAC, Speex, WAV) formats and it can rip straight from DVD or v4l (Video 4 Linux) devices too.

To Install Run below commands:

Add the Arista PPA
$sudo add-apt-repository ppa:webupd8team/arista
$sudo apt-get update

install the latest 0.9.7 version
$sudo apt-get install arista

Also install the following packages to get support for most formats:
$sudo apt-get install gstreamer0.10-plugins-bad-multiverse gstreamer0.10-plugins-ugly-multiverse

Awoken icon set is one of the most popular icons set for Gnome.

To install it, it’s easy, open a terminal and type

$sudo add-apt-repository ppa:alecive/antigone

$sudo apt-get update

$sudo apt-get install-icon-theme awoken

awoken-icon-theme-customization

Freatures :

• better support for Ubuntu Natty
• Passage of the GUI based configuration Zenity

For the rest of the changelog is here: http://alecive.deviantart.com/art/AwOken-163570862

Nginx (engine X)  is an asynchronous Web server written by Igor Sysoev for the needs of a Russian site with very heavy traffic. It can be configured to be a reverse proxy server Web and e-mail proxy server (IMAP / POP3). The translation of part of the documentation of Nginx from Russian into English was done out of the shadows in the light and turned it into success. The sources of this robust server are available in a BSD-style license.

To install Nginx as static content server, open a terminal and type:

$sudo apt-get install nginx

If you’re running Ubuntu through apt-url, you can directly install Nginx via your Mozilla Firefox browser

. To do this, click directly on this link:
apt://nginx

You just installed Nginx on your machine. You just have to start it by typing:

$sudo /etc/init.d/nginx start

If you want to stop Nginx, just type:

$sudo /etc/init.d/nginx stop

If you want to apply a configuration and restart Nginx without it cutting your server, just type:

$sudo /etc/init.d/nginx restart

Alternatively, if the controls above are:

sudo service nginx start
sudo service nginx restart
sudo service nginx stop

At start or restart Nginx for the first, you see a message like:
Restarting nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
configuration file /etc/nginx/nginx.conf IS Successful test
nginx.

Check that Nginx has started by opening your web browser and enter:
Example
http://127.0.0.1
or
http://localhost/

FileZilla is free, open source, cross-platform FTP software, consisting of FileZilla Client and FileZilla Server. Binaries are available for Windows, Linux.
to install on Ubuntu type below command

$ sudo apt-get install filezilla

After installation you can find file zilla  in

FileZilla looks like

To enable mod_rewrite in Ubuntu, you just need to write this command in terminal

$sudo a2enmod rewrite

After enabling mod_rewrite you need to restart the apache by running below command.

$ sudo /etc/init.d/apache2 restart

The first Alpha version of the upcoming Ubuntu 11.04 (Natty Narwhal) operating system is now available for download.the big news is that Unity is now the default in the Ubuntu Desktop Edition, as Mark Shuttleworth said at UDS. Unity uses Compiz, therefore you will need proper video drivers installed to see it. If you don’t have video drivers installed, you’ll see the default two panels layout.

Highlights :

Linux kernel 2.6.1937
Firefox 4 Beta 7

Video :

* http://cdimage.ubuntu.com/releases/natty/alpha-1/(Ubuntu Desktop et Server)
* http://cdimage.ubuntu.com/kubuntu/releases/natty/alpha-1/ (Kubuntu)
* http://cdimage.ubuntu.com/xubuntu/releases/natty/alpha-1/ (Xubuntu)
* http://cdimage.ubuntu.com/edubuntu/releases/natty/alpha-1/ (Edubuntu DVD)
* http://cdimage.ubuntu.com/ubuntustudio/releases/natty/alpha-1/ (Ubuntu Studio)

Ubuntu 11.04 release Dates

November 4, 2010: Alpha 1
December 2, 2010: Alpha 2
January 6, 2011: Alpha 3
February 3, 2011: Alpha 4
March 3, 2011: Alpha 5
March 31, 2011: Beta
April 28, 2011: Ubuntu 11/04 Final

Wget is to download  download of files from the Web.
It supports HTTP, HTTPS, and FTP protocols, as well as
retrieval through HTTP proxies.

Syntax

wget [option] … [URL] …
Multiple options can be, for example
wget-rpk http://www.example.com
Usage Examples

Download file
wget http://www.example.com/fichier.html

Download a file whose URL contains a “&” (note quotes)
wget “http://www.example.com/min.php?page=home&user=ma”

Download, in addition to the specified file, all files required for optimal viewing
wget-p http://www.example.com/index.html

Draw an entire site (recursive download)
wget-r http://www.example.com/

Resume a download
wget-c http://www.example.com/xyz.html

Specify the name of the file once downloaded
wget – output-document = index.html http://www.example.com/index.php?page=home

Download files only an extension (here,. Jpg)
wget-A.jpg http://www.example.com/

Limit download speed
wget – limit-rate = 30k http://www.example.com/

Using a file containing addresses for download
wget-i liste_de_zyx.txt

Mp3 download all addresses contained in this list
wget-r-l1-H-t1-nd-N-np-a.mp3 erobots = off-imp3_sites.txt

Links automatically convert to a local consultation pages
wget-k http://www.example.com/

Download via ftp (With authentication)
wget-r l4 ftp://username:password @ example.com /

Create a backup of your del.icio.us bookmarks
wget http://del.icio.us/username/

Use wget to display the page source on the terminal
wget-qO – http://www.example.com/blog

For instance, if your .wgetrc
sets “exclude_directories” to /cgi-bin, the following example will
first reset it, and then set it to exclude /~nobody and /~somebody.
You can also clear the lists in .wgetrc.

wget -X ” -X /~nobody,/~somebody

I have leaned this examples  from various sites