Tutorial Proggraming Free

tutorial - Free Gaming repository for Ubuntu - Playdeb

Originally known as Playbuntu (renamed for trademark reasons), Playdeb is a repository for Ubuntu (and it's derivatives) that will provide all games available on getdeb.net and more in a repository format - allowing you to receive updates for your favorite game via the Update Manager tool.

To install Playdeb, you can:

   1. Download and install updated apturl package.
   2. then,
          * install the playdeb package (if you'll get a dialog asking you for confirmation, press Y)
          * or add this line to System-Administration-Software Sources, Third-Party Software tab:

                deb mirror://www.getdeb.net/playdeb-mirror/hardy/// hardy/

      (three trailing slashes are intentional)

Once this is done. To install any game now only have to go to Add and Remove and set up ... "All available applications." Now we can install any application with two clicks.

See the available games section for those!

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source:http://linuxpoison.blogspot.com/2008/10/13578175718048.html

tutorial - Audio files Converter - Gnac

Gnac is an easy-to-use audio conversion program for the GNOME desktop. It is designed to be powerful but simple. It provides easy audio file conversion between all GStreamer supported audio formats.

Download gnac: here

Installation:

Untar the source code:

# bzip2 -d gnac-0.1.1.tar.bz2

# tar -xvf gnac-0.1.1.tar

Compile and install the package:

# ./configure

# make

# make install

Running:
After successful compilation and installation, you can now fire the command "gnac" to launch the application.

source:http://linuxpoison.blogspot.com/2008/10/13578175711406.html

tutorial - Install everything on Ubuntu

Appnr is the Web-based tool and a service that install applications on Ubuntu.

The AptURL Protocol Handler and a Web browser support are required to install applications. The AptURL Protocol Handler is a program that handles special URLs to installing software on APT-based Linux systems. Ubuntu 7.10 or higher can use AptURL by default.

The page is divided into the following categories, Internet, P2P, Games, Media Player, Graphics, Office, Editor, Development, Desktop Tools, System Tools, Utilities, Emulator, Accessibility, Education, Additionals, codecs, Firefox Add-ons, GNOME, KDE, XFCE. It also has a search engine to help us find what we need.

You need to install apturl to use the service of this site
sudo apt-get install apturl
Download apturl: here

source:http://linuxpoison.blogspot.com/2008/10/1357817571349.html

tutorial - Install and Run Linux application on Windows, Mac OS

LINA takes Linux a giant step closer to universal usability with its ability to run pre-compiled Linux applications on any operating system. Once LINA is installed on your machine, you can download and run Linux applications and application packages either from LINAforge or the LINA store. These applications are as easy to install and run as any application on your normal operating system. Although these applications run on LINA, they are completely integrated with your own operating system, allowing you full access to output and configuration files.

LINA is a complete virtual Linux operating system that runs silently and invisibly on top of your own operating system. As soon as you install LINA, you will be able to run the thousands of applications written for the Open Source Linux operating system. Just like any Linux user, you will be able to download, compile and run free Open Source applications.

Download Lina : here

source:http://linuxpoison.blogspot.com/2008/10/13578175719093.html

tutorial - Booting Linux in 5 seconds

At the Linux Plumbers Conference, Arjan van de Ven, Linux developer at Intel and author of PowerTOP, and Auke Kok, another Linux developer at Intel's Open Source Technology Center, demonstrated a Linux system booting in five seconds. The hardware was an Asus EEE PC, which has solid-state storage, and the two developers beat the five second mark with two software loads: one modified Fedora and one modified Moblin. They had to hold up the EEE PC for the audience, since the time required to finish booting was less than the time needed for the projector to sync.

How did they do it? Arjan said it starts with the right attitude. "It's not about booting faster, it's about booting in 5 seconds." Instead of saving a second here and there, set a time budget for the whole system, and make each step of the boot finish in its allotted time. And no cheating. "Done booting means CPU and disk idle," Arjan said. No fair putting up the desktop while still starting services behind the scenes. (An audience member pointed out that Microsoft does this.) The "done booting" time did not include bringing up the network, but did include starting NetworkManager. A system with a conventional hard disk will have to take longer to start up: Arjan said he has run the same load on a ThinkPad and achieved a 10-second boot time.

How they did it?

source:http://linuxpoison.blogspot.com/2008/10/135781757119984.html

tutorial - Universal Linux Installer - UNetbootin

UNetbootin allows for the installation of various Linux/BSD distributions to a partition or USB drive, so it's no different from a standard install, only it doesn't need a CD. It can create a dual-boot install, or replace the existing OS entirely.

UNetbootin (Netboot Universal Installer) is an application platform that offers the possibility of installing some of the best-known Linux distributions in a simple manner and without the need to burn the CD image on a CD / DVD, you just have to point to ISO image.

UNetbootin uses a Windows or Linux-based installer to install a small modification to the bootloader (bootmgr and bcdedit on Vista, grldr and boot.ini for NT-based systems, grub.exe and config.sys for Win9x, grub on Linux, or syslinux when installing to a USB drive), uses the bootloader to boot the desired distribution's installer or to load the system utility, no CD required. After the distribution has been installed, or once done using the system utility, the modification to the bootloader is then undone.

UNetbootin can also be used to load various system utilities, including:

    * Parted Magic, a partition manager that can resize, repair, backup, and restore partitions.
    * Super Grub Disk, a boot utility that can restore and repair overwritten and misconfigured GRUB installs or directly boot various operating systems
    * Backtrack, a utility used for network analysis and penetration testing.
    * Ophcrack, a utility which can recover Windows passwords.
    * NTPasswd, a utility which can reset Windows passwords and edit the registry.
    * Gujin, a graphical bootloader that can also be used to boot various operating systems and media.
    * Smart Boot Manager (SBM), which can boot off CD-ROM and floppy drives on computers with a faulty BIOS.
    * FreeDOS, which can run BIOS flash and other legacy DOS utilities.

Download Unetbootin for Windows and for Linux

source:http://linuxpoison.blogspot.com/2008/10/13578175711184.html

tutorial - Top Video Players

VLC (http://www.videolan.org/vlc/)
VLC media player is a highly portable multimedia player for various audio and video formats (MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, ...) as well as DVDs, VCDs, and various streaming protocols. It can also be used as a server to stream in unicast or multicast in IPv4 or IPv6 on a high-bandwidth network.

Features include:

    * Support for input media: UDP/RTP Unicast and Multicast, HTTP / FTP, MMS, File, DVD, VCD, SVCD, DVB, MPEG encoder, Video acquisition (V4L)
    * Input formats: MPEG, ID3 tags, AVI, ASF / WMV / WMA, MP4 / MOV / 3GP, OGG / OGM / Annodex, Matroska, WAV (including DTS), Raw Audio: DTS, AAC, AC3/A52, Raw DV, FLAC, FLV (Flash)

Video
    * Decoders: MPEG-1/2, DIVX, MPEG-4, XviD, 3ivX, H.264, Sorenson 1/3 (Quicktime), DV, Cinepak, Theora, H.263 / H.263i, MJPEG, WMV 1/2, WMV 3 WMV-9 / VC-1, Indeo Video v 3-5, Rado Video
    * Subtitles: DVD, SVCD / CVD, DVB, OGM, Matroska, Text files, Vobsub
    * Filters: Deinterlace, cropping, image wall, image adjust, rotate/mirror, logo overlay, magnification, image distortion, bluescreen, RSS/Aton feeds
    * Outputs: Native, X11, XVideo, SDL, Framebuffer, ASCII Art

Audio
    * Decoders: MPEG Layer 1/2, MP3, AC3 - A/52, DTS, LPCM, AAC, Vorbis, WMA 1/2, WMA 3, ADPCM, DV Audio, FLAC, QDM2/QDMC (Quicktime), MACE, Real Audio, Speex
    * Filters: Visualization effects, equalizer
    * Outputs: Native (OSS, ALSA), S/PDIF (OSS, ALSA), Multi-channel (OSS, ALSA), SDL, ESD, aRts, JACK

Streaming
    * UDP Unicast / Multicast, RTP Unicast / Multicast, File, HTTP, MMSH
    * Transcoding
    * Send DVD subtitles
    * Send SAP announces

Xine (http://xinehq.de/)
xine is a powerful multimedia program, specializing in video playback. In addition to functioning as a standalone product, it also serves as a library and engine for other software products.

It has excellent support for a large number of different file formats including physical media DVD, Video CD, and Audio CD. Xine supports a large number of formats including .mpeg, .ts, .ogg, .ogm, .avi, .asf, .wmv, .wma, .mpv, .m2v, .mp2, .mp3, .cpk, .voc, .snd, and .au. It also supports a wide variety of video and audio codecs. Streaming formats include mpeg-2 and mpeg-1 system (audio + video multiplexed), mpeg elementary (audio/video only, e.g. mp3 files), AVI file with various video formats (some of them by using win32 dlls), Vorbis OGG, and quicktime.

Features include:

    * Support for OSS, ALSA, Irix Audio, Sun Audio, ARts, and ESD Audio drivers
    * Streaming playback support covering the following Webcasting/Streaming protocols: NMS, PNM, RTSP, HTTP, and raw TCP socket streaming
    * Supports DXR3, DVB tv cards, Video 4 Linux, and WinTV-PVR 250/350 pci with TV full screen support
    * Skinnable GUI
    * Download and installation of new skins from the internet
    * Navigation controls (seeking, pause, fast, slow, next chapter, etc)
    * Linux InfraRed Control support (LIRC)
    * On Screen Display features
    * DVD and external subtitles
    * DVD/VCD menus
    * Audio and subtitle channel selection
    * Closed Caption support
    * Brightness, contrast, audio volume, hue, saturation adjusting
    * Playlists
    * Mediamarks
    * Image snapshot
    * Audio resampling
    * Software deinterlacing algorithms
    * 2-3 pulldown detection (tvtime plugin)
    * Configuration dialog
    * Aspect ratio changing
    * Fullscreen display
    * DTS passthrough

Totem (http://www.gnome.org/projects/totem/)
Totem is the official movie player of the GNOME desktop environment. It features a playlist, a full-screen mode, seek and volume controls, as well as keyboard navigation.

Totem is included as the default media player in many Linux distributions including Ubuntu, Mandriva, and Fedora.

Features include:

    * Video thumbnailer for the file manager
    * Nautilus properties tab
    * Mozilla (Firefox) plugin to view movies inside your browser (in development)
    * Webcam utility (in development)
    * Play any xine or GStreamer supported file
    * LIRC support
    * Shoutcast, m3u, asx, SMIL and ra playlists support (also usable from a shipped LGPL library)
    * DVD (with menus), VCD playback, disc-type automatically detected
    * TV-Out configuration with optional resolution switching
    * 4.0, 4.1, 5.0, 5.1, stereo and AC3 Passthrough audio output
    * Full-screen mode (move your mouse and you get nice controls) with Xinerama, dual-head and Viewport support
    * Remote operation mode to control a running Totem
    * Seek and Volume controls
    * Aspect ratio changing, Scaling based on the video's original size
    * Full keyboard control
    * Playlist with Repeat and Shuffle modes, with saving feature and drag'n'drop reordering
    * GNOME and Nautilus integration (Totem registers the file-types, adds a menu item, uses the proxy configuration, saves sessions, and registers pnm, mms, uvox and rtsp schemes, removes playlist items from a disc that's getting ejected)
    * Properties window (information about the current movie)
    * Drag'n'drop and mousewheel actions
    * Screenshot feature
    * Brightness, Contrast, Hue and Saturation control
    * Visualisation plugin when playing audio-only files
    * Telestrator mode using Gromit
    * Video thumbnailer
    * Nautilus properties page
    * Works on remote displays
    * Automatic external subtitle load, or manual (only on the command-line, use like: totem file:///file.avi#subtitle:file.srt)
    * DVD, VCD and OGG/OGM subtitles and languages support
    * Dialog for more accurate seeking
    * Authentication dialogs when location requires it

MPlayer (http://www.mplayerhq.hu/design7/news.html)
MPlayer is a very popular movie player which runs on many systems including Linux. It has builtin support for the most common video and audio formats (see list below), as well as having a powerful filter system for video and audio manipulation.

Features include:

    * Supported Input Formats: (S)VCD (Super Video CD), CDRwin's .bin image file, DVD, including encrypted DVD, MPEG-1/2 (ES/PS/PES/VOB), RIFF 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, and TV grabbing

    * Supported Video and Audio Codecs: MPEG-1 (VCD) and MPEG-2 (SVCD/DVD/DVB) video, MPEG-4 in all variants including DivX ;-), OpenDivX (DivX4), DivX 5 (Pro), XviD, 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, and various old simple RLE-like formats

    * Supported audio codecs: MPEG layer 1, 2, and 3 (MP3) audio, AC3/A52 (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

    * Supported Video Output Devices: X11 with SHM extension, X11 using overlays with the Xvideo extension (hardware YUV & scaling), Xvideo Motion Compensation, VIDeo Interface for *niX, VIDIX in an X11 window, VIDIX on the console, X11 DGA extension (both v1.0 and v2.0), OpenGL renderer, gl2, framebuffer output, SVGAlib output (supports EGA displays), SDL >= v1.1.7 driver, GGI graphics output, text mode rendering, text mode rendering in color, display through the VESA BIOS (also needed for Radeon TV-out), and DirectFB support

    * Supported Audio Output Devices: OSS (Open Sound System), SDL (Simple Directmedia Layer), ALSA (Advanced Linux Sound Architecture), NAS (Network Audio System), ESD (ESound Daemon), ARTS (KDE Sound System),and JACK (Jack Audio Connection Kit)

* Streaming: Authentication for Real RTSP stream

Kaffeine (http://kaffeine.kde.org/)
Kaffeine is a simple, easy to use, full featured media player for the K Desktop Environment (KDE).

Currently, Kaffeine can use xine-lib, MPlayer, or GStreamer as a backend. It is therefore able to play almost all audio and video files.

Features include:

    * Multiple playlists
    * Play Audio CDs, DVDs and VCDs
    * Streaming
    * Rip and encode audio tracks to be stored on your hard disk
    * Supports Digital Video Broadcasting devices supported by linuxtv drivers
    * Electronic Program Guide
    * Can broadcast several DVB channels (being on the same multiplex) on a LAN
    * DCOP Interface
    * Supports Linux Infrared Remote Control (LIRC)

source:http://linuxpoison.blogspot.com/2008/10/135781757118594.html

tutorial - Debian Package Creator - DebianPackageMaker

DebianPackageMaker is a simple user interface/tool to make a debian package easier and straightforward to use and deploy your linux application to any debian based distro.

You can build debian packages using two modes:

Target Mode
Manually specify the installation directory and the files to be installed in the target installation directory.

Source Mode
          o Debian Package Maker will configure the source for you, compile them and then build a package using the target rules.
          o configure/autogen scripts and Makefile/rules is required for DPM to automate the whole process for you.

Provides user interface for package information that will be used as control file to create a debian based package.

It also provides a different tabs for adding package dependencies:

    * Dependencies
    * Pre-dependencies
    * Recommends
    * Suggests
    * Breaks
    * Conflicts
    * Replaces
    * Provides

Can add scripts like postins,changelogs etc Straight forward to use

source:http://linuxpoison.blogspot.com/2008/10/13578175716507.html

tutorial - Transcoding video and audio files

Transcode is a suite of tools, all of which are command line utilities, for transcoding various video, audio, and container formats, running on a platform that supports shared libraries and threads. Decoding and encoding is done by loaded modules that are responsible for feeding transcode with raw video/audio streams (import modules) and encoding the frames (export modules). It includes a variety of video and audio filters, including (but not limited to) video de-interlacing, audio resampling, framerate conversion, different video resizing algorithms, smoothing, sharpening, denoisifying, and cutting.

A number of modules are included to enable import of DVDs on-the-fly, Video4Linux (including V4L2 video capturing), MPEG elementary streams (ES) or program streams (VOB), MPEG1/2/4 video, Digital Video (DV), YUV4MPEG streams, Nuppel Video (NUV), quicktime (MOV), MPEG audio layer-1/2/3, WAVE, DIVX, MJPEG, and raw or compressed (pass-through) video frames. A number of export modules for enable writing DivX ;-), DivX 4.02/5.xx, XviD, Digital Video, MPEG-1/2 or uncompressed AVI files with MPEG, AC3 (pass-through) or PCM audio. More file formats and codecs for audio/video import are supported by the MPlayer and avifile import modules (exporting with avifile is restricted to video codecs, with MPEG/PCM or AC3 (pass-through) audio provided by transcode). Limited DVD subtitle rendering is also available.

Its modular concept is intended to provide flexibility and easy user extensibility to include other video/audio codecs or file types. A set of tools is available to extract, demultiplex and decode the sources into raw video/audio streams for import, non AVI-file export modules for writing single frames (PPM) or YUV4MPEG streams, auto-probing and scanning your sources and to enable post-processing of AVI files, including header fixing, merging multiple files or splitting large AVI files to fit on a CD.

Transcode runs on UN*X like systems like Linux, BSD, and MacOSX.

Features include:
    * Video:
          o Cut out arbitray frame region for processing
          o De-interlace video frame
          o Fast enlarging of video width/height by a multiple of 32 rows/column up to 1024x768
          o Fast reduction of video width/height by a multiple of 32 rows/column
          o High-quality resizing with filter
          o Cut out arbitray frame region for encoding
          o Rescale (downsample) video width/height by a power of 2
          o Flip video frame upside down
          o Mirror image of video frame
          o Swap R and B bytes in video frame
          o Transform to b/w video frame
          o Apply gamma correction
          o Anti-alias video frame
    * Audio:
          o Change the volume of the audio stream
          o Resample audio stream
          o Swap byte order in audio stream
          o Sync video with audio frames (V=0|A=N, V=1|A=N+1,...)

source:http://linuxpoison.blogspot.com/2008/10/13578175712194.html

tutorial - How to Convert videos to the Ipod format

thin liquid film (TLF) is an application which allows linux users to quickly and easily convert video files into a format suitable for playing on the video capable ipods (i.e. 5th and 6th generation ipods).

TLF uses the FFmpeg engine and allows batch processing of any number of files, displays detailed information about source video files, saves default settings for future sessions, has configurable output quality settings, and displays a progress bar.

It is written in pyqt, so it should work with a default KDE installation, and is very easy to install.

Features include:
    * Batch process any number of files
    * Display detailed information about source video files
    * Change output settings for one or many files
    * Save default settings for future sessions
    * Configure output quality settings
    * Choose between mpeg4 and h264 as output codec
    * Choose between 320 and 640 output video width, while maintaining aspect ratio
    * Choose between 1 or 2 pass encoding
    * Show a preview the encoded video
    * Progress bar to show encoding progress
    * Add pre-encoded files for transfer to the ipod
    * Uses ffmpeg as the encoding engine
    * Upload encoded files to your ipod directly
    * Set file information for upload to your ipod
    * Add files to existing or new video playlists on your ipod
    * Add files for encoding via the included servicemenu

Download : here

Requirement:
* pyqt - these are the python bindings for qt. These are now part of the standard kde modules, so if you've got kde, then you should have pyqt;

* ffmpeg - this is a very standard linux package, and should be part of your distributions standard install, or at least in their repositories. However, you need to make sure that ffmpeg has been compiled with support for xvid and h264 codecs. See below for details on how to tell;

* libgpod python bindings - this is not essential for the enocoding part of the application. However, without it, you will not be able to upload to your ipod. These python bindings are part of the libgpod package, which is a dependency of both gtkpod and amarok. If you've got either of those installed, then you should have the python bindings. However, some distributions (like *ubuntu) keep the bindings in a second package, so you may have to install them separately;

* mplayer - this is not essential, but is a requirement for previewing the encoded video files;

* a 5G ipod - although, you can use TLF without an ipod, I'm not sure why you would bother :), unless you want to convert your home videos for your friends :).

Installation:
You will then need to untar the file. You can do that with this command:

    * tar -jxpf tlf-version.tar.bz2

You'll need to replace version with the correct version number of the tarball you downloaded. Then change to the resulting directory. TLF comes with an installation script called install.py. You need to run this script as root. To change to root, type:

    * su
    * Password:

You will be asked to enter your password, and then you should be root. If you use *ubuntu, there is no root account, so you'll need to run the script like this:

    * sudo ./install.py
    * Password:

The install script does not require any input. It installs all the files necessary for TLF to /usr/local/thinliquidfilm. It will create an executable file called thinliquidfilm in /usr/local/bin, which should be in your path, and will install a TLF servicemenu entry for konqueror. You will have to manually add a menu entry to TLF in kde or gnome.

source:http://linuxpoison.blogspot.com/2008/10/1357817571766.html

tutorial - Media Collection Manager

Griffith is a movie collection manager application. Adding items to the movie collection is as quick and easy as typing the film title and selecting a supported source. Griffith will then try to fetch all the related information from the Web.

Griffith is written in Python, making use of the pyGTK+ library, a GTK+ binding for Python.

Features include:
    * Fetches film information from the Internet based on your locale via a plug-in:
          o Brazilian Portuguese: E-Pipoca
          o Czech: CSFD
          o English: IMDb, DVD Empire, AnimeDB, Moviefone, Mediadis
          o French: Allocine, Cinemovies
          o German: FilmeVonA-Z.de, Kino.de, OFDb
          o Italian: Cinematografo
          o Polish: Wirtualna Polska, FDb, Tanuki-Anime, Onet, Filmweb, Stopklatka
          o Portuguese: 7arte, PTGate, Clube MyDVD
    * Integrates well with a database (MySQL, PostgreSQL, SQLite3 used by default) to keep tabs on your library
    * Can backup/restore your database
    * Exports to CSV, PDF, XML and HTML files
    * Imports from CSV files
    * Generates PDF from cover art
    * Keeps track of your films that are out on loan
    * Enables you to sort/filter your library
    * Has built-in multi-language support

source:http://linuxpoison.blogspot.com/2008/10/135781757111539.html

tutorial - Apache Configuration tool -- Rapache

Rapache is a simple tool for remotely managing and configuring an apache2 instance without having to hassle around through configuration files.

Rapache is a python + GTK tool that allows you to configure apache2 and all of its modules.
GPL'd, Its goal is to provide the user with a simple interface to facilitate the work to those who want to set up a web-server in a few clicks.

Current Features:
- Vhost managing
- Virtualhost normalization to conform Debian policy
- Module managing
- Syntax highliting when showing confs source

Soon to come:
- Config files backup and quick restore
- Plugin system
- SSL Plugin, Basic_Auth plugin, Mono plugin, Logging Plugin
- Apache start/stop and status

Future:
- SSH Handling
- Localization

Download : here

source:http://linuxpoison.blogspot.com/2008/10/135781757116174.html

tutorial - /proc explained

This filesystem (/proc) contains a huge set of numbered directories that come and go. Each and one of these numbered directories contains information pertaining to all of the currently active processes on the machine. When a new process is started, a new directory is created in the /proc filesystem for it, and a lot of data is created within it regarding the process, such as the commandline with which the program was started with, a link to the "current working directory", environment variables, where the executable is located, and so on

Most of the information in the files are rather "human readable", except a few of them. However, a few of them you should not touch, such as the kcore file. The kcore file contains debugging information regarding the kernel, and if you try to 'cat' it, your system may very well hang up and die. If you try to copy it to a real file on the harddrive, you will very soon have filled up your whole partition, and so on. What all of this tells you is to be very careful. Mostly, none of the variables or entries in the /proc filesystem is not dangerous to watch, but a few of them are. A brief walkthrough of the most important files:

cmdline - The command line issued when starting the kernel.
cpuinfo - Information about the Central Processing Unit, who made it, known bugs, flags etcetera.
dma - Contains information about all DMA channels available, and which driver is using it.
filesystems - Contains short information about every single filesystem that the kernel supports.
interrupts - Gives you a brief listing of all IRQ channels, how many interrupts they have seen and what driver is actually using it.
iomem - A brief file containing all IO memory mappings used by different drivers.
ioports - Contains a brief listing of all IO ports used by different drivers.
kcore - Contains a complete memory dump. Do not cat or anything like that, you may freeze your system. Mainly used to debug the system.
kmsg - Contains messages sent by kernel, is not and should not be readable by users since it may contain vital information. Main usage is to debug the system.
ksyms - This contains the kernel symbol table, which is mainly used to debug the kernel.
loadavg - Gives the load average of the system during the last 1, 5 and 15 minutes.
meminfo - Contains information about memory usage on the system.
modules - Contains information about all currently loaded modules in the kernel.
mounts - Symlink to another file in the /proc filesystem which contains information about all mounted filesystems.
partitions - Contains information about all partitions found on all drives in the system.
pci - Gives tons of hardware information about all PCI devices on the system, also includes AGP devices and built in devices which are connected to the PCI bus.
swaps - Contains information about all swap partitions mounted.
uptime - Gives you the uptime of the computer since it was last rebooted in seconds.
version - Gives the exact version string of the kernel currently running, including build date and gcc versions etcetera.

And here is a list of the main directories and what you can expect to find in there:

bus - Contains information about all the buses, hardware-wise, such as USB, PCI and ISA buses.
ide - Contains information about all of the IDE buses on systems that has IDE buses.
net - Some basic information and statistics about the different network systems compiled into the system.
scsi - This directory contains information about SCSI buses on SCSI systems.
sys - Contains lots of variables that may be changed, including the /proc/sys/net/ipv4 which will be deeply discussed in this document.

source:http://linuxpoison.blogspot.com/2008/10/13578175713278.html

tutorial - One stop for up-to-date comparisons - WikiVS

WikiVS allows you to see how things compare directly with each other, instead of leaving you to arbitrary ratings, stars, and smiley faces.

You can see exactly what kind of benefits you can receive by using one product over the other before you invest your money into it. You can determine how much closer a project is to your interests than another before you invest your time. You can see what features a program has and lacks in comparison to another before you invest your effort into it.

Dare to Compare!
You have expertise! You know which products are more suitable than others for a specific purpose. You have experience in projects and know what details are useful in judging them. You use programs that help you to achieve your goals better than other programs.

The 15 Most Popular Comparisons:

The 10 Newest Comparisons:

source:http://linuxpoison.blogspot.com/2008/10/135781757110302.html

tutorial - Top Graphical Text Editors

A text editor is software used for editing plain text files. It has many different uses such as modifying system configuration files, writing programming language source code, etc ...

Gedit (http://www.gnome.org/projects/gedit/)

gedit is a small and lightweight text editor for the GNOME environment.

Complete GNOME integration is provided, with support for Drag and Drop (DnD) from Nautilus (the GNOME file manager), the use of the GNOME help system, the GNOME Virtual File System and the GNOME print framework.

gedit uses a Multiple Document Interface (MDI), which lets you edit more than one document at the same time.

gedit supports most standard editing features, plus several not found in your average text editor (plugins being the most notable of these).

Features include:
    * Complete support for internationalized text (UTF-8)
    * Configurable syntax highlighting for various languages (C, C++, Java, HTML, XML, Python, Perl and many others)
    * GNOME VFS support for remote files
    * Complete integration with the GNOME Environment
    * Search and Replace
    * Clipboard support
    * Text wrapping
    * Undo/Redo
    * File Revert
    * Editing files from remote locations
    * A complete preferences interface
    * Configurable Plugins system, with optional python support
    * Bracket matching
    * Backup files
    * Printing and Print Previewing Support
    * Complete online user manual

Kedit (http://kate-editor.org/)

Kate is a multi document editor which is part of the kdebase package of KDE, the K Desktop Environment.

With a multi-view editor like Kate you get a lot of advantages. You can view several instances of the same document and all instances are synced. Or you can view more files at the same time for easy reference or simultaneous editing. The terminal emulation and sidebar are docked windows that can be plugged out of the main window, or replaced therein according to your preference.
Features include:
    * Powerful syntax highlighting and bracket matching
    * MDI, window splitting, window tabbing
    * Spell checking
    * CR, CRLF, LF newline support
    * Encoding support (utf-8, utf-16, ascii etc.)
    * Encoding conversion
    * Search and replace text using regular expressions
    * Drag and drop text editing
    * Code and text folding
    * Infinite undo/redo support
    * Block selection mode
    * Auto indentation
    * Auto completion support
    * Integrated shell
    * Wide protocol support (http, ftp, ssh, webdav etc.)
    * Plugin architecture for the application and editor component
    * Customizable shortcuts
    * Integrated command line
    * Full DCOP scripting
    * Scriptable using JavaScript (KDE 3.5)

Scribes (http://scribes.sourceforge.net/)

Scribes is a text editor for GNOME that focuses on streamlining your workflow.

It does so by ensuring common and repetitive operations are intelligently automated, and also by eliminating factors that prevent the user from focusing on his or her tasks.

Scribes does not try to be a complicated integrated development environment (IDE), or a pseudo IDE. Instead, Scribes focuses exclusively on powerful text processing and manipulation.

Scribes is a spatial and document-centric application. Consequently, it is not designed to use tabbed windows.

Features include:
    * Extensible via Python plugins
    * Remote editing (ftp, sftp, ssh, samba, webdav, webdavs)
    * Snippets!
    * Automatic word completion
    * Automatic correction and replacement
    * Automatic pair character completion and smart insertion
    * Automatic indentation
    * Powerful text processing and manipulation functions
    * Bookmarks and smart navigation
    * Document Switcher
    * Syntax colors for over 30 languages

Cream (http://cream.sourceforge.net/)

Cream is billed as a modern configuration of the Vim text editor. Cream is a set of scripts and add-ons that sit on top of gVim.

Vim is a powerful and full-featured console based text editor. However, Vim is regarded as taking some time to master. Through common menus, keyboard shortcuts, and extensive editing functions, Cream makes Vim approachable for new users and adds powerful features for experienced users.

Cream shapes Vim into an interface you probably already know (sometimes called Common User Access). Whether you are writing emails or developing large software applications, Cream aims to save you time and get you up and running quickly.

The goal of the project is to provide an approachable text editing application with keyboard shortcut and menu access to Vim's full arsenal of functionality

Features include:
    * Edits and converts Microsoft, Unix and Apple format text documents
    * Supports editing of very large files, size is limited by diskspace
    * Encoding support for 38 varieties of 8-bit, 2-byte, and Unicode
    * A single editing mode. (Cream does not use Vim's modal editing unless turned on from the Preferences menu)
    * Tabbed document interface
    * Have multiple documents open at a time
    * User-selected font, window size/position and most other settings are retained and restored automatically
    * Standard and intuitive menus. All functionality is available through pull down menus which indicate available keyboard shortcuts
    * Syntax highlighting makes reading code easier for more than 350 programming languages
    * Unlimited Undo/Redo
    * Automatic text indention
    * Block indention or unindention (with selection, Tab and Shift+Tab)
    * Bookmarking with visible margin marks
    * Spell checking with alternative spelling suggestions and auto-correction. Many languages are supported
    * File explorer window
    * Programmer Features such as line golding, Template completion based on file types, Ctags navigation, and Expert mode
    * Additional functionality through add-ons, modules that can provide a vast library of functionality including converting text to HTML, Hex to ASCII, Email Prettyfier, Email Munge, Encrypt, and a Slide Generator

source:http://linuxpoison.blogspot.com/2008/10/13578175712313.html

tutorial - Download videos from YouTube.com - youtube-dl

youtube-dl is a small command-line program to download videos from YouTube.com. It requires the Python interpreter, version 2.4 or later, and it's not platform specific. It should work in your Unix box, in Windows or in Mac OS X. The latest version is 2008.10.16

In Linux, download it, give it execution permission and copy it to one of the PATH directories (typically, /usr/local/bin).

After that, you should be able to call it from the command line as youtube-dl or youtube-dl.py. Usage instructions are easy. Use youtube-dl followed by a video URL or identifier. Example:

# youtube-dl "http://www.youtube.com/watch?v=foobar"

The video will be saved to the file foobar.flv in that example. As YouTube.com videos are in Flash Video format, their extension should be flv. In Linux and other unices, video players using a recent version of ffmpeg can play them. That includes MPlayer, VLC, etc.

Some videos require an account to be downloaded, mostly because they're flagged as mature content. You can pass the program a username and password for a YouTube.com account with the -u and -p options, like

# youtube-dl -u myusername -p mypassword "http://www.youtube.com/watch?v=foobar"

Another useful options:
* For usage instructions, use youtube-dl -h or youtube-dl --help.
* youtube-dl can attempt to download the best quality version of a video by using the -b or --best-quality option.
* youtube-dl can attempt to download the mobile quality version of a video by using the -m or --mobile-version option.

Download: here

source:http://linuxpoison.blogspot.com/2008/10/13578175713716.html

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