Skype is a little piece of software that lets you make free calls to anyone else on Skype, anywhere in the world. And even though the calls are free, they are really excellent quality.

Make free Skype-to-Skype calls to anyone else, anywhere in the world. * Call phones and mobiles at pretty cheap rates per minute. * Group chat with up to 100 people or conference call with up to nine others. * Free to download.

How To Install Skype On Ubuntu 11.10

To merge two or more mp3 you will need to get the program called mp3wrap. To split two files you can use program called mp3splt. You can install them by typing:

sudo apt-get install mp3wrap mp3splt

Now you can merge two mp3 files (let’s say 1.mp3 and 2.mp3) by typing:

mp3wrap merged.mp3 2.mp3 1.mp3

note that the merged.mp3 will start with 2.mp3 and finish with 1.mp3

You can split mp3′s now by typing:

mp3splt merged.mp3 0.0 1.2 3.4

this will split file merged.mp3 into two parts:

00:00 – 01:02
01:02 – 03:04

where xx:xx represents minutes:seconds.

If you have problems splitting files merged with mp3wrap delete whatever mp3wrap add to filename and then try again. You shouldn’t experience any problems now.

To see more info on these commands type

man mp3wrap

or

man mp3splt

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Complete editing of pdf documents is made possible with PDFedit. You can change either raw pdf objects (for advanced users) or use predefined gui functions. Functions can be easily added as everything is based on a scripts.

PDFEdit :

About the project
PDFedit is free and open source library for manipulating PDF documents, released under terms of GNU GPL version 2. It includes PDF manipulating library based on xpdf, GUI and set of command line tools.

Library
Multiplatform library working on Unix systems, Windows32/64 and also Windows CE and others. You can use it to read, change and extract information from a PDF file. It is based on xpdf library.

Tools
Tools include example usage of the library which proved to be useful.

GUI
Graphical interface based on QT3.x which heavily depends on scripting; therefore, any user can modify the behaviour by scripts and plugins. There is also a beta version of QT4.x based windows pdf editor.

Download PDFedit

 ,  qt4 open pdf files

If you have installed Ubuntu 11.10 (latest version : beta 1, final is coming on Oct 13th) then first you would need to install some basic applications ( Recommended post – top things to do after installing ubuntu 11.10) to begin, e.g a VoIP software – that can be used to make free calls (audio/video) over the internet. Google talk or gtalk is one of such applications but it’s not available for Ubuntu or Linux distros.

For text/voice chat there is another good program – skype, although Ubuntu 11.10 has one such program (installed by default) – Empathy which can be used for text chat, video calls, audio calls etc but skype is probably better than that. Besides text chat or audio/video calls over the web, skype can also make calls to phone/mobile at some rates and one of the most cool feature is audio/video conferencing. Other great features include – screen sharing, file sharing etc.

Skype is based on peer to peer protocol and hence it provides better quality as compared to other chat client. That’s why skype is the most popular chat application. In Ubuntu 11.10 (oneiric ocelot) skype has been added in official package repository –  so you can install it in a couple of click, right from the Ubuntu Software Center.

Installing Skype on Ubuntu 11.10 – oneiric ocelot

Open Ubuntu Software Center and search for ‘skype’ , then click on install and authenticate yourself (enter your ubuntu login password) to begin download/installation process.

Or Install skype from Terminal

sudo apt-get install skype

(Source : http://blog.sudobits.com)

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I have the Firefox PPA set. It updated today to Firefox 6. Ever since I cannot access my Add-ons. It just says Loading, and never stops.

Anybody know how I can fix this?

Answers:

Simply don’t use the ppa, then force the previous packages to downgrade (from synaptic menu: select firefox then package force), or there may be an add-on conflict

firefox -safe-mode

Try disabling some one at a time till you find the issue I’m not having any issues i got a performance boot it feels like. Sadly I found out that ff7 will have much better memory usage now I am already impatient about getting it.

What’s new : Firefox 6

•     The address bar now highlights the domain of the website you’re visiting
•     Streamlined the look of the site identity block
•     Added support for the latest draft version of WebSockets with a prefixed API
•     Added support for EventSource / server-sent events
•     Added Scratchpad, an interactive JavaScript prototyping environment
•     Added a new Web Developer menu item and moved development-related items into it
•     Improved usability of the Web Console
•     Improved the discoverability of Firefox Sync
•     Reduced browser startup time when using Panorama

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Mozilla Firefox (One of the most popular open source web browser) has just released its next stable version – Firefox 5 with some new features and improvements. The version 5.0 is available for Linux, Mac , Windows and Android operating system. Now, Firefox has very high release frequency, probably due to the fact that – they want to deliver all the innovative features quickly to the users, new version has arrived with a of performance tweaks and enhancements.

If you are using Ubuntu 11.04 (Natty Narwhal), you got version 4.0 installed by default; now it’s time to either update it or install a fresh version of Firefox 5, on the other hand if you are using older version of Ubuntu (The most appropriate reason would be the ‘critical bugs of Ubuntu 11.04′) such as Ubuntu 10.10 (Maverick Meerkat) or Ubuntu 10.04 (Lucid Lynx) then also the procedure would be same.

The major feature which is included in this release is “Do Not Track on Multiple platform feature” which provides more control to users about how their data or behavior  is used or tacked on the web.

Upgrading Firefox to Latest version in Ubuntu

If you have installed Firefox from PPA or Synaptic Package Manager, then it will be updated along with the system update. Move to System -> Administration -> Update Manager and click on Check to update the cache (About the current Packages). If you are using the Firefox version installed by default (it’s most likely the case if you are using Ubuntu 11.04, but within few days it must be available under official repository of Ubuntu 11.04) then the latest version may not show up in the update manager, then first add this PPA (Personal Package Archive) address to Synaptic Package Manager ->Settings -> Repositories.

 

ppa:ubuntu-mozilla-security/ppa

Now, search for Firefox 5 for in Synaptic Package Manager, right click and select Upgrade option. it will hardly take a couple of minutes.

Alternative way of installing Firefox on Ubuntu

Run the following commands ( then update your browser using Update Manage Manager if you don’t want to update other packages, in this case execute only first 2 commands at terminal).

sudo add-apt-repository ppa:ubuntu-mozilla-security/ppa
sudo apt-get update
sudo apt-get dist-upgrade

 

Download Firefox 5 for Ubuntu

Download the Firefox tar.bz2 file from its official website, and execute -run-mozilla.sh file, after extraction (tar -xf mozilla-5.tar.bz2).

source : blog.sudobits.com

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DVD/CD has no longer that much importance in our lives, but still very useful in many cases specially the bootable DVD/CD, even though the Linux based OS can be booted/installed from a USB other OS(e.g Windows) still uses it.

On Ubuntu 10.04 (Lucid Lynx) or 10.10 (Maverick Meerkat,the latest stable version) or Ubuntu 11.04 (Next Version), you can find a lot of DVD burning softwares in the Ubuntu Software Center (USC), but what is the best among them ? Actually it is a very difficult question to answer because in most of the cases, it depends on the type of work. That’s why this post will introduce you with a free and open source dvd burning software, that you can use to burn DVD’s quickly in a reliable way.

Brasero – The Best Software/Application for Burning DVD/CD

Brasero is a free and open source application (GUI)  for burning dvd on Linux Distros like Ubuntu, Linux Mint etc. Other softwares that you may want to use is – K3b,CD/DVD Creator,DeVeDe Video creator etc. Brasero is very simple to use with a lot of features.

Features of Brasero at a Glance

burn/write Data or Audio CD/DVD
Erase DVD
a customizable GUI
Copy/clone CD/DVD
Song/Image/Video Previewer
Save/Load Projects
Supports Drag and Drop

How to install Brasero on Ubuntu

Brasero is installed by default in most of the cases. If you found brasero missing on your systems or you want to reinstall it then use Ubuntu Software Center to install it. On the other hand you can also install it from shell/Command Line/Terminal. Type (Followed by your user account => login password ) -

$ sudo apt-get install brasero

source : blog.sudobits.com

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A Firewall is a program (software) or a device which allows us to set different types of rules for a network i.e how the packets will be treated at different ports ..and it’s very widely used in protecting a computer from unauthorized/unwanted access through a network. Due to an exponential growth in computer related crimes, Firewall is a mandatory application for every computer users.

Ubuntu 11.04 – Natty Narwhal or any other Linux distros is very secure by default as they have built in firewalls running by default. So normal Ubuntu users do not need any firewall (Unlike the windows users do because Windows is insecure by default! , Comodo is an excellent firewall for Windows users) in order to protect themselves from crackers or hackers or cyber criminals.

Advanced or ‘geeky’ Ubuntu users may need (or they just want to do that for learning purposes) to set inbound and outbound traffic rules/policies manually for any ports (I mean virtual or software ports), In that case you just need to use UFW (Uncomplicated Firewall; a frontend of IPtables, which works as an interface to netfilter (Package Filtering System provided by Linux Kernel)) , which is installed by default on all Ubuntu versions, but by default it has only Command Line Interface. So in this post you will learn how to install a front end for UFW, Firewal Configuration (gufw), to manage and configure UFW easily in GUI mode. gufw is a simple (probably the best and fast) firewall configuration software that works! and got 5 star in Ubuntu Software Center ratings. You may need to enable (by check the square box) the universe repository in Synaptic Package Manager -> Settings ->Repositories -> Ubuntu Software .

How to install Firewall Configuration Application – gufw on Ubuntu 11.04

1. Open Ubuntu Software Center and search for ‘gufw’.
2. Then, click on install button in the search result, and enter your login password if required.
3. Now, wait for the installation to complete ..relax it will hardly take a minute..
4. That’s All..

Alternative Way – Install gufw from Command Line / Terminal

If you enjoy terminal on Ubuntu then the best way to install is to use terminal/shell (bash). Open terminal (CTRL+ALT+T) and enter the command(s)  -

sudo apt-get install gufw

 

source : blog.sudobits.com

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MPlayer is a movie player which runs on many systems (see the documentation). It plays most MPEG/VOB, AVI, Ogg/OGM, VIVO, ASF/WMA/WMV, QT/MOV/MP4, RealMedia, Matroska, NUT, NuppelVideo, FLI, YUV4MPEG, FILM, RoQ, PVA files, supported by many native, XAnim, and Win32 DLL codecs. You can watch VideoCD, SVCD, DVD, 3ivx, DivX 3/4/5, WMV and even H.264 movies.

Another great feature of MPlayer is the wide range of supported output drivers. It works with X11, Xv, DGA, OpenGL, SVGAlib, fbdev, AAlib, DirectFB, but you can use GGI, SDL (and this way all their drivers), VESA (on every VESA compatible card, even without X11!) and some low level card-specific drivers (for Matrox, 3Dfx and ATI), too! Most of them support software or hardware scaling, so you can enjoy movies in fullscreen. MPlayer supports displaying through some hardware MPEG decoder boards, such as the Siemens DVB, DXR2 and DXR3/Hollywood+.

MPlayer has an onscreen display (OSD) for status information, nice big antialiased shaded subtitles and visual feedback for keyboard controls. European/ISO 8859-1,2 (Hungarian, English, Czech, etc), Cyrillic and Korean fonts are supported along with 12 subtitle formats (MicroDVD, SubRip, OGM, SubViewer, Sami, VPlayer, RT, SSA, AQTitle, JACOsub, PJS and our own: MPsub). DVD subtitles (SPU streams, VOBsub and Closed Captions) are supported as well.
License

MPlayer is available under the GNU General Public License version 2. It is not available under any other licensing terms, not even for substantial amounts of money. If you have questions about the GNU GPL, consult the GPL FAQ.

Supported Input Formats

(S)VCD (Super Video CD)
CDRwin’s .bin image file
DVD, including encrypted DVD
MPEG-1/2 (ES/PS/PES/VOB)
AVI file format
ASF/WMV/WMA format
QT/MOV/MP4 format
RealAudio/RealVideo format
Ogg/OGM files
Matroska
NUT
NSV (Nullsoft Streaming Video)
VIVO format
FLI format
NuppelVideo format
yuv4mpeg format
FILM (.cpk) format
RoQ format
PVA format
streaming via HTTP/FTP, RTP/RTSP, MMS/MMST, MPST, SDP
TV grabbing

Supported Video and Audio Codecs

most important video codecs:

MPEG-1 (VCD) and MPEG-2 (SVCD/DVD/DVB) video
MPEG-4 ASP in all variants including DivX , OpenDivX (DivX4), DivX 5 (Pro), Xvid
MPEG-4 AVC aka H.264
Windows Media Video 7/8 (WMV1/2)
Windows Media Video 9 (WMV3) (using x86 DLL)
RealVideo 1.0, 2.0 (G2)
RealVideo 3.0 (RP8), 4.0 (RP9) (using Real libraries)
Sorenson v1/v3 (SVQ1/SVQ3), Cinepak, RPZA and other QuickTime codecs
DV video
3ivx
Intel Indeo3 (3.1, 3.2)
Intel Indeo 4.1 and 5.0 (using x86 DLL or XAnim codecs)
VIVO 1.0, 2.0, I263 and other H.263(+) variants (using x86 DLL)
MJPEG, AVID, VCR2, ASV2 and other hardware formats
FLI/FLC
HuffYUV
various old simple RLE-like formats

most important audio codecs:

MPEG layer 1, 2, and 3 (MP3) audio
AC3/A52, E-AC3, DTS (Dolby Digital) audio (software or SP/DIF)
AAC (MPEG-4 audio)
WMA (DivX Audio) v1, v2
WMA 9 (WMAv3), Voxware audio, ACELP.net etc (using x86 DLLs)
RealAudio: COOK, SIPRO, ATRAC3 (using Real libraries)
RealAudio: DNET and older codecs
QuickTime: Qclp, Q-Design QDMC/QDM2, MACE 3/6 (using QT libraries), ALAC
Ogg Vorbis audio
VIVO audio (g723, Vivo Siren) (using x86 DLL)
alaw/ulaw, (ms)gsm, pcm, *adpcm and other simple old audio formats

The codec status page has the complete list and is updated daily.
Supported Video Output Devices
general:

x11: X11 with SHM extension
xv: X11 using overlays with the Xvideo extension (hardware YUV & scaling)
xvmc: Xvideo Motion Compensation
vidix: VIDeo Interface for *niX
xvidix: VIDIX in an X11 window
cvidix: VIDIX on the console
winvidix: VIDIX under Windows
dga: X11 DGA extension (both v1.0 and v2.0)
gl: OpenGL renderer
gl2: alternative OpenGL renderer (with multiple textures)
fbdev: framebuffer output
svga: SVGAlib output (supports EGA displays)
sdl: SDL >= v1.1.7 driver
ggi: GGI graphics output
aalib: text mode rendering
caca: text mode rendering in color
vesa: display through the VESA BIOS (also needed for Radeon TV-out)
directfb: DirectFB support
direct3d: native Windows Direct3D 9 output driver
directx: native Windows DirectX output driver
quartz: native Mac OS X output driver

card specific:

mga: Matrox G200/G400/G450/G550 hardware YUV overlay via the mga_vid device
xmga: Matrox G200/G400/G450/G550 overlay (mga_vid) in X11 window (Xv emulation on X 3.3.x!)
syncfb: Matrox G400 YUV on framebuffer
3dfx: Voodoo 3/Banshee hardware YUV (/dev/3dfx)
tdfxfb: Voodoo 3/Banshee hardware YUV on tdfx framebuffer
mpegpes: Siemens DVB hardware MPEG-1/2 decoder boards (or MPEG-PES file output)
dxr2: DXR2 hardware MPEG-1/2 decoder boards
dxr3: DXR3/Hollywood+ hardware MPEG-1/2 decoder boards
zr: Zoran360[56]7 based hardware MJPEG cards
vdpau: hardware acceleration for NVidia cards

special:

png: PNG output
jpeg: JPEG output
gif89a: animated GIF output
tga: Targa output
yuv4mpeg: yuv4mpeg output for mjpegtools
pgm: PGM output (for testing purposes)
md5: MD5sum output (for debugging)
null: null output (for speed tests/benchmarking)
bl: Blinkenlights output

See the video card section of the documentation for more details.
Supported Audio Output Devices

OSS (Open Sound System) – factory standard under UNIX
SDL (Simple Directmedia Layer) – wrapper library with support for various systems
ALSA (Advanced Linux Sound Architecture) 0.5/0.9/1.0 for Linux
SUN audio driver for BSD and Solaris8/9 users
SGI audio for IRIX
Mac OS X audio
Windows audio
NAS (Network Audio System)
ESD (ESound Daemon)
ARTS (KDE Sound System)
JACK (Jack Audio Connection Kit)

Speed

Most of time-critical parts are optimized for Intel/AMD (MMX/MMX2/SSE/SSE2/3DNow!/3DNowEx), PowerPC G4 (Altivec), SPARC (VIS), ARM PDAs and the Sony Playstation 2.
GUI

MPlayer comes with a GUI that is not built by default. The GUI section of the documentation explains how to enable it. Several external MPlayer frontends provide alternative GUIs.

Mplayer Download

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YouTube is the most popular video sharing site on this planet. Some videos (specifically educational videos/tutorials or class lectures) are officially available for download; In the case, if you liked the video (specifically Music related stuffs) very much, then it is most likely the case that ‘you will watch it again and again’; so having a local copy of that video, isn’t a good idea, of course it is! it won’t only save your bandwidth consumption but also good for other users (Human). But it may be illegal, so use the videos for personal purposes only.

In this you will learn  – how to download youtube videos using some command line tool or plugins in Mozilla Firefox, on Ubuntu 11.04 (Alias : Natty Narwhal). The both of the methods – one using youtube-dl utility and the other using are explained below :

Downloading YouTube Videos on Ubuntu 11.04

Method #1 : Using Command Line Tool

Open terminal (CTRL+ALT+T) and enter the following commands -

sudo apt-get install youtube-dl

When you have installed the above tool
(open the video of its website  and copy the URL : ‘http://www.youtube.com/watch?v=DWevG2BlH3k ‘ ), Then download that video with with one simple command -

youtube-dl “URL_Of_The_Target_Video”

Method #2 : Using Plugin with Firefox

If you are looking for GUI method, then use a Firefox plugin like – ‘Download Flash and Video’. To install a plugin either search for it from the browser itself  or download it from the given link – YouTube Video Downloader. Install it and restart your browser. Now you will notice a download icon on Bottom Right Corner. To download any youtube videos,  just open that video and click on download icon..that’s all.

source : http://blog.sudobits.com/2011/05/01/how-to-download-youtube-videos-in-ubuntu-11-04/

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