Tutorial Proggraming Free

tutorial - Finding differences in two files with TkDiff

tkdiff is a graphical front end to the diff program. It provides a side-by-side view of the differences between two files, along with several innovative features such as diff bookmarks and a graphical map of differences for quick navigation.

Installation OpenSuse
Goto yast >> Software management and search for package "TkDiff", select the package and install it using yast

After successful installation you can goto console and use command: tkdiff to open the mail window

You can also use the tool from command like using commands ..

* tkdiff to compare two files.
* tkdiff -conflict to merge a file with conflict markers generated by "merge" or "cvs", The file is split into two temporary files which you can then merge as usual.
* tkdiff to compare with the most recent version checked into CVS/SCCS/RCS (checked for in that order).
* tkdiff -r to compare with the most recent version checked in.
* tkdiff -r to compare with revision of .
* tkdiff -r -r to compare revision of with the most recent version checked in.
* tkdiff -r -r to compare revisions and of .

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source:http://linuxpoison.blogspot.com/2009/03/135781757118953.html

tutorial - Which Linux Distribution to Choose?

Linux Distribution Chooser is an on line application where you have to answer series of questions, these sets also includes questions on your knowledge on Linux and type of OS you are look for and depending on your answers the application will gives you a list of recommendations on the Linux distributions that best suits your needs.

Do check this out, it's really useful.

source:http://linuxpoison.blogspot.com/2009/03/13578175714419.html

tutorial - 9 features Ubuntu should implement

This post came from this (in Spanish), ran it through Google Translate, and posted it on his blog and it looks like this Spanish translation came from this (in English) and claimed it had ten features. Anyway, The original one is kumailht

Ubuntu is a great operating system, but a small modification and adding here and there will make the ubuntu desktop a enjoyable experience. These include:

1. Weather on your desktop

Time is very important to us. For example, an application like atmosphere, we can show or hide with a simple button and allows us to obtain weather forecasts and know the temperature of different locations we select.

2. Wallpapers which change over time

It is a kind of idea of having kind of wallpapers from photos taken of different environments or at different times and showing one or the other.

tutorial - The privacy and disk space cleaner - BleachBit

BleachBit deletes unnecessary files to free valuable disk space, maintain privacy, and remove junk. Rid your system of old clutter including cache, cookies, Internet history, localizations, logs, temporary files, and broken shortcuts.

Designed for Linux systems, it wipes clean Adobe Reader, APT, Bash, Beagle, Chromium, Epiphany, Firefox, Flash, GIMP, Google Earth, Java, KDE, OpenOffice.org, Opera, RealPlayer, Second Life viewer, Skype, VIM, XChat, Yum, and more.

Installation:
OpenSuse 11.1 user can use "1-click" installer to install BleachBit -- here

Fedora 10 user can install it using rpm - here
Ubuntu 8.10 (Intrepid Ibex) - here
Ubuntu 9.04 (Jaunty Jackalope) - here

Source code - here, compile and install it using following command ...

tar xvjf bleachbit-0.4.0.tar.bz2
cd bleachbit-0.4.0
make -C po local
python bleachbit/GUI.py

After sucessfull installation go to terminal and fire command: bleachbit

source:http://linuxpoison.blogspot.com/2009/03/135781757112861.html

tutorial - 301 Redirects using apache

301 redirect is the safest search engine redirect. This is also the friendliest method for web page redirection. Most web hosting company and web master out there will definitely recommend this method of web page redirection. The code “301 is interpreted as “moved permanently”.

For websites hosted in either dedicated server or a shared web hosting server, you use 301 redirects in redirecting a single html page or an entire website.

Here’s and example of redirecting a single page/html page:

Redirect 301 /oldpage.html http://www.example.com/newpage.html

For a whole website, you can use 301 redirect in this manner:

Redirect 301 / http://www.example.com/

There are other use of the 301 redirect on a web sites. Here are other use of it:

Changed file extension
Redirect web site with ‘www’ to not having one.
vice versa of the previous example.
Redirect example.com/index.php to example.com/

So next time you moved your web site content from one web hosting server provider to another or moving your site to a new domain name, you can definitely use the 301 redirect.

This is simple configuration you can make it into your Apache configuration file.

[ref: http://www.sysadmindayph.com/blog/301-redirects-htaccess/]

source:http://linuxpoison.blogspot.com/2009/03/135781757111296.html

tutorial - Create, Format, Resize/Move, Copy or Delete partitions - OpenSuse

The Disk Manager is a visual partitioning utility, written on top of GNU parted, that can create, format, resize/move, copy or delete partitions, with 13 known filesystems.

The application interface is in the style of QtParted or GParted, but, is very modular, and, as part of DARKSTAR's ALICE (Advanced Linux Installation and Configuration Environment), is used by the installer for partitioning objectives.

It is capable, of running from a console, even though it is written entirely in KDE/Qt.

It requires OpenSuSE's hwinfo, parted and HAL/DBus support, and is part of the DARKSTAR Linux Project.

Installation:
Use "1 click" installer to install Disk Manager - here

After sucessfull installation, go to teminal and fire command: diskman

source:http://linuxpoison.blogspot.com/2009/03/135781757117344.html

tutorial - Analyzing boot performance of OpenSuse 11.1 with bootchart

Often the boot process of a machine is not as fast as one would like. It is commonly suggested that you reduce the number of started services so that your machine boots up faster. However, one thing we must know before trying to optimize our boot process, is where it is slow. To do that, we will use a tool called bootchart.

Bootchart is a tool for performance analysis and visualization of the GNU/Linux boot process. Resource utilization data and process information are collected during the boot process, and can later be displayed in a PNG, SVG, or EPS encoded chart. Analyzing the chart will help in finding opportunities for optimization.

The first thing we must do is, obviously, install the package, open yast -- software managment and search for "bootchart" and click on "Accept" to install bootchart

Bootchart provides a shell script to be run by the kernel in the init phase. The script will run in background and collect process information, CPU statistics and disk usage statistics from the /proc file system. The performance data are stored in memory and are written to disk once the boot process completes.

The boot log file is later processed using a Java application (or the web form) which builds the process tree and renders a performance chart in different formats.

Configuration:
Bootchartd mounts a tmpfs below /tmp, so make sure you don't clear this at boot time, otherwise you will have invalid data.

Especially check the setting of: CLEAR_TMP_DIRS_AT_BOOTUP in sysconfig/cron

Reboot your system and after reboot you will find two files (bootchart.tgz and bootchart.png) under /var/log directory and this png file will give you detail view of the time that a particular process has taken while booting so that you can look into it and can optimize it for faster booting.

source:http://linuxpoison.blogspot.com/2009/03/135781757114357.html

tutorial - A downloader for Rapidshare and other file share archives

FreeRapid is a simple Java downloader for Rapidshare and other file share archives. It has support for concurrent dwnloading from multiple services, and is able to use a proxy list.

Main Features
    * support for concurrent downloading from multiple services
    * downloading using proxy list
    * download history
    * smart clipboard monitoring
    * automatic checking for file's existence on server
    * auto shutdown options
    * automatic plugins updates
    * simple CAPTCHA recognition
    * works on MS Windows, Linux and MacOS

Installation:
OpenSuse 11.1 user can use "1-click" installer - here

After sucessfull installation you can run the freerapid from the menu or from the command line

source:http://linuxpoison.blogspot.com/2009/03/13578175718041.html

tutorial - All in one Peer-to-Peer File-Sharing Program for OpenSuse

Apollon is a Peer-to-Peer File-Sharing Program written for Linux.

Apollon uses the giFT core to connect to various networks, including OpenFT, Gnutella, FastTrack

OpenFT is the homegrown giFT network, Gnutella is the network used by BearShare, LimeWire and others and FastTrack is the popular network used by KaZaA.

Apollon uses a plugin system which allows you to choose which network or multiple networks you wish to use. Finally, plugins for the OpenNap and SoulSeek networks are under development.

Features:
* Searching and downloading from several networks at the same time
* Tabbed searching
* Preview of mp3 and videos (you need kde-multimedia installed)
* Configure giFT and your plugins with Apollon's settings dialog
* FirstRun wizard to get started easily
* systemtray docking
* Download in the background
* Apollon can connect to a remote giFT daemon
* Chat for Apollon users
* Comes in several languages

Installation:
Opensuse 11.1 user can use "1-click" installer - here

After successful installation go to terminal and fire command: apollon or open from the kde menu- Application >> Internet >> Peer-to-Peer >> apollon

source:http://linuxpoison.blogspot.com/2009/03/135781757119385.html

tutorial - File Integrity Checker for OpenSuse - AFICK

Afick is a security tool, very close from the well known tripwire. It allows to monitor the changes on your files systems, and so can detect intrusions. It only needs standard perl to work.

It will be run daily by cron to detect new/deleted/modified files. It works by first (init) making an snapshot of strategic directories attributes, and then compare the disk status with this snapshot.
A Graphical interface is available in afick-gui package.

Afick is now composed of different parts (packages) :

    * afick : the base, command-line tool
    * afick-gui : a graphical interface (in perl/Tk)
    * rtafick : a "real-time" afick : which will run as a service/daemon : it is in very early stage

Installation:
Use "1-click" installer to install all the above component from packman - here or if you are already subscribe to "packman" you can go the yast >> software management and search for package "afick", after getting the results select the packages and "accept" to install it.

After sucessfull installation you can open up the aflick-tk (GUI tool) for configuration

After installation of any new software you can run the "compare" mode to see what all changes was done in the system files

You can also use the command line option to work with aflick

Initiate your base: afick.pl -c /etc/afick.conf -i
Compare it regularly: use the compare (-k) or update (-u) command
afick.pl -c /etc/afick.conf -k
afick.pl -c /etc/afick.conf -u

Update it manually after any change: To know exactly what an install does :
   1. run afick in update mode
   2. install/upgrade/remove your software
   3. re-run afick in update mode

Look at the man pages for more details

source:http://linuxpoison.blogspot.com/2009/03/13578175717728.html

tutorial - “Powered by Ubuntu” stickers!

System 76 is giving away some “Powered by Ubuntu” stickers to people who send self-addressed stamped envelopes to them. These are where you could send your envelopes to:

India
Baishampayan Ghose
214/4, Sher-e-Punjab Society
Andheri (E), Mumbai --- 93
India

United Kingdom
The Linux Emporium
Bridge House
17a Maybrook Road
Sutton Coldfield
Birmingham
B76 1AL UK

United States
System76, Inc. (Free Sticker)
1582 S. Parker Rd. Ste. 310
Denver, Colorado 80231

It is best to paste these stickers on your system and let other know that you are "Powered by Ubuntu"
I have send my own envelope to "india" location and let see when these stickers are comming to me.

Thanks to the guys at System 76 for supporting the Ubuntu community with these stickers.
Click here for a list of Ubuntu sticker suppliers in other countries.

source:http://linuxpoison.blogspot.com/2009/03/13578175718159.html

tutorial - How to Compress Javascript

First, you can try to make the javascript file smaller itself. There are lots of utilities to “crunch” your files by
removing whitespace and comments.

You can do this, but these tools can be finnicky and may make unwanted changes if your code isn’t formatted
properly. Here’s what you can do:

1. Run JSLint (online or downloadable version) to analyze your code and make sure it is well-formatted.

2. Use Rhino to compress your javascript. There are some online packers, but Rhino actually analyzes your source
code so it has a low chance of changing it as it compresses, and it is scriptable.

Install Rhino (it requires Java), then run it from the command-line:

java -jar custom_rhino.jar -c myfile.js > myfile.js.packed 2>&1

This compresses myfile.js and spits it out into myfile.js.packed. Rhino will remove spaces, comments and shorten
variable names where appropriate. The “2>&1″ part means “redirect standard error to the same location as the
output”, so you’ll see any error messages inside the packed file itself (cool, eh? Learn more here.).

source:http://linuxpoison.blogspot.com/2009/03/13578175716344.html

tutorial - MP3 to iPod Audio Book Converter

Zak allows you to select one or more MP3 files and convert them into a single MP3 or MP4/M4A/M4B file. The primary use for Zak is audio books. Most audio books are distributed in several files, usually one per chapter. Converting these files into a single .m4b allows one to take advantage of the iPod's bookmarking features.

Zak is written in python using the pygtk module. Zak is designed for GNU/Linux, but it is likely possible to get it to work on other systems without too much trouble.

Requires: python, pygtk, gtk+, madplay, and ffmpeg.

Note: This program was inspired by the Windows program "MP3 to iPod Audio Book Converter" available from http://www.freeipodsoftware.com/

OpenSuse 11.1 user can use "1-click" installer -- here

For any other GNU/Linux distro download zak-0.3.tar.gz.
To install, perform the following steps...
Requirments

Make sure your system has all these requirements installed:madplay, ffmpeg, python, pygtk2, vte, gstreamer, gstreamer-python

1. Locate your download and unpack it: tar xzf zak-0.3.tar.gz
2. cd into the unarchived directory: cd zak-0.3/
3. Use sudo (or root) to run the install: sudo python setup.py install

You should now be able to run zak from the command line

source:http://linuxpoison.blogspot.com/2009/03/135781757118228.html

tutorial - Subversion repositories configuration on OpenSuse

Userfriendly SVN is a PHP5 web interface which permit to administrate and to configure Subversion repositories.

It allows users to create and manage projects without command line SVN client. USVN manages your projects for you, and allows users to checkout source code only if they are allowed to. Dispatch administrators on different projects become easy and safe.

During the installation process, USVN shows you an apache configuration bloc. After merging it with your apache configuration file, you don't need further root access.

USVN enable an easy, fast and powerful repositories files access configuration. For example translators may only have translation files access.

Installation:

OpenSuse 11.1 user can use "1-click" install to install USVN - here
After sucessfull installation go to >> http://localhost/usvn and you should see the first welcome screen

2) Click on "next" and on the 4th page you can configure the path of SVN repositories

3) Click on "next" to configure the database section (MySQL)

4) After successful configuration of all the section you can now login to the USVN, go to administration section can add users, groups and projects, the interface is very simple to figure all these out.

source:http://linuxpoison.blogspot.com/2009/03/13578175719309.html

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