tutorial 9ku

tutorial - Take a break - Workaholic

Workaholic is a program which shows a window to remind you to take a break after a period of time by showing a transparent window with a progress bar. You can skip rests, or postpone these for 5 or 10 minutes.

To install Workaholic on Ubuntu, you can execute the following steps:

1. Open your /etc/apt/sources.list file with gedit text editor:
sudo gedit /etc/apt/sources.list

2. Add this line:
deb http://mundogeek.net/repo ubuntu all

3. Update the list of packages:
sudo apt-get update

4. Workaholic requires python-imaging package, you can install it with this command:
sudo apt-get install python-imaging

5. Install Workaholic:
sudo apt-get install workaholic

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source:http://linuxpoison.blogspot.com/2008/04/13578175807938.html

tutorial - A powerful, speedy, and sexy remote control for your Desktop - GNOME Do

The typical computer user interacts with a number of different resources and programs on her computer, all of which are accessed by disparate means, including menus, location bars, icons, shortcut keys, etc. We plan to consolidate these interfaces by creating an application that indexes items in the user's desktop environment (documents, contacts, bookmarks, applications, multimedia, etc.) and lets the user search through these items and manipulate these items with commonly performed actions (open, run, email, chat, etc.).

GNOME Do allows you to quickly search for many items present in your GNOME desktop environment (applications, Evolution contacts, Firefox bookmarks, files, artists and albums in Rhythmbox, Pidgin buddies, etc.) and perform commonly used actions on those items (Run, Open, Email, Chat, Play, etc.). GNOME Do is inspired by Quicksilver and GNOME Launch Box.

GNOME Do is not a search tool. If you know what you're looking for and what you want to do with it, Do will help you do it quickly.

GNOME Do is not only for GNOME. Although it was created by a GNOME lover, Do runs on KDE and other common environments.

source:http://linuxpoison.blogspot.com/2008/04/135781758015681.html

tutorial - Open Source collaboration suite - Spicebird

Spicebird is a free and open source collaboration suite. It features include email, calendaring and instant messaging. This post shows how you can install Spicebird on Ubuntu 7.10 Gutsy Gibbon.

To install Spicebird on Ubuntu, you can execute the following steps:

1. Download Spicebird beta 0.4 for Linux from here. Save it to ~/Desktop folder.

2. Open terminal window, go to ~/Desktop folder:

cd ~/Desktop

3. Extract to /opt:

sudo tar jxvf spicebird-beta-0.4.en-US.linux-i686.tar.bz2 -C /opt

4. Create GNOME menu.

sudo gedit /usr/share/applications/spicebird.desktop

Then add:

[Desktop Entry]
Encoding=UTF-8
Name=Spicebird
Comment=Collaboration suite
Exec=/opt/spicebird-beta/spicebird
Icon=/opt/spicebird-beta/icons/mozicon50.xpm
Terminal=false
Type=Application
Categories=Application;Network;
StartupNotify=true

5. Now you can run Spicebird by clicking Applications → Internet → Spicebird.

source:http://linuxpoison.blogspot.com/2008/04/13578175808621.html

tutorial - Monitor Web page changes

Specto is a OpenSource WebPage update/monitoring program - it saves you time and keeps you updated by automatically checking web pages (static or dynamic)to see if they have changed also helps to check it at time when someone is trying to change your page.

You can configure Specto to monitor changes to wiki pages, blog posts, forum threads, your email inbox, and even files and folders on your own system. An unobtrusive pop-up from its system tray icon informs you of all changes, so you don't have to hop around looking for updates.

You can install it from the compressed tarball if you want the most recent release. First explode the tarball with the tar zxvf specto-0.2.2.tar.gz command. Next, browse into the specto-0.2.2/ directory. You don't have to install Specto to begin using it; the command ./launch.sh launches Specto. But Fedora and Ubuntu users can respectively use the su -c "python setup.py install" or sudo python setup.py install command to install Specto.

source:http://linuxpoison.blogspot.com/2008/04/13578175805884.html

tutorial - Tune/Configure your Ubuntu with Ubuntu Tweak

Ubuntu Tweak is a tool for Ubuntu that makes it easy to configure your system and desktop settings.

It provided many useful desktop and system options that the default desktop environment isn't provided.

Features of Ubuntu Tweak:

* View of Basic System Information(Distribution, Kernel, CPU, Memory, etc.)
* GNOME Session Control
* Auto Start Program Control
* Show/Hide and Change Splash screen
* Show/Hide desktop icons or Mounted Volumes
* Show/Hide/Rename Computer, Home, Trash icon or Network icon
* Tweak Metacity Window Manager’s Style and Behavior
* Compiz Fusion settings, Screen Edge Settings, Window Effects Settings, Menu Effect Settins
* GNOME Panel Settings
* Nautilus Settings
* Advanced Power Management Settings
* System Security Settings

Installation:

Open your terminal, type the command to run gedit(or other editor in your opinion) to modify the sources.list:

sudo gedit /etc/apt/sources.list

And put the two line into it:

deb http://ppa.launchpad.net/tualatrix/ubuntu hardy main deb-src http://ppa.launchpad.net/tualatrix/ubuntu hardy main

Then update the source and install or upgrade Ubuntu Tweak:

sudo apt-get update sudo apt-get install ubuntu-tweak

if you have installed, just type:

sudo apt-get dist-upgrade

Download: Here

source:http://linuxpoison.blogspot.com/2008/04/135781758015382.html

tutorial - Reiser FS is dead (RIP)

Yesterday, the Open Source community took an emotional hit when veteran Linux programmer Hans Reiser was convicted of first degree murder in the suspicious disappearing of his wife, Nina. While I won’t go into the details of the case, as this has been covered extensively in the press, I would like to talk a little bit about how this verdict will impact the technology in play for file system dominance in our favorite Open Source operating system, Linux.

Suse and Debian use ReiserFS version 3, a stable and proven version of the code that has been sitting mostly fallow for some time, and is maintained with bug and security fixes on a best effort basis.

From the SuSE and Debian perspective, this is an obviously unacceptable state of affairs. The OpenSuSE project has already moved its distribution to use the ext3 file system

Reiser found guilty of first degree murder

source:http://linuxpoison.blogspot.com/2008/04/13578175805810.html

tutorial - Remote Control your PC with bluetooth cell phone

anyremote is a Console application which allows to control PC with bluetooth cell phone

The overall goal of this project is to provide wireless remote control service on Linux through Bluetooth, InfraRed, Wi-Fi or just TCP/IP connection.

anyRemote supports wide range of modern cell phones line Nokia, SonyEricsson, Motorola and others.

anyRemote was developed as thin "communication" layer between Buetooth (IR, Wi-Fi)-capabled phone
and Linux, and in principle could be configured to manage almost any software.

anyRemote could be used with:
* bluetooth connection with java client if cell phone is JSR82 compatible
* Wi-Fi connection with java client if phone supports Wi-Fi
* IR connection with java client if java realization in phone supports access to IR port
* ordinary TCP/IP connection with java client, if PC is connectable from internet
* bluetooth, infrared or cable connection using AT "modem" commands

* web interface
* it supports some of IR remotes supplied with TV tuner cards (like LIRC)
* it has limited support for Bemused clients

Download : Here

source:http://linuxpoison.blogspot.com/2008/04/135781758019324.html

tutorial - Ubuntu Tips, Tricks and tutorials

[Source: lxpages.com]

source:http://linuxpoison.blogspot.com/2008/04/13578175802325.html

tutorial - gnormalize - audio converter, encoder, ripper, meta data (tag) editor and audio cd player

gnormalize is a front-end to wavegain, an audio converter, encoder, ripper, meta data (tag) editor and audio cd player.

Supported formats: MP3, MP4 (or M4A or ACC), MPC (or MPP or MP+), OGG, APE and FLAC. gnormalize decodes the MP3, MP4, MPC (or MPP - MusePack), APE (Monkey's Audio), FLAC and Vorbis OGG files to wave, then normalizes the wave to a targeted volume level and re-encodes it. gnormalize can also rip audio cd; encode audio data; convert audio format between MP3, MP4, MPC, APE, FLAC and OGG; and change the encoding and ID3 tag properties of final normalized files.

Key Features:

* Convert from/to MP3, MP4, MPC, APE, OGG, FLAC and Wave;
* Support for LAME, FAAC, OGGENC, MPPENC, FLAC and MAC encoders;
* Support for LAME, FAAD, OGGDEC, MPPDEC, FLAC and MAC decoders;
* Rip audio CDs utilizing cdparanoia or cdda2wav;
* Play audio CDs utilizing cdcd or Audio::CD or gnormalize::cdplay;
* Edit and get Meta data like artist, title, album, ... ;
* Support normalization with adjustable sensibility;
* Can normalize/convert files recursively into the directory;
* Normalize with ReplayGain algorithms;
* Includes wavegain to normalize wave files;
* Read the CDDB entry for an audio CD with CDDB_get;
* Translation to English and Portuguese (Brasil).

Download : Here

source:http://linuxpoison.blogspot.com/2008/05/13578175804974.html

tutorial - How To Increase SSH Connection timeout

Do you get annoyed when you have a SSH session open, visit your browser for a while, and then return only to find you were disconnected? So, to avoid this ...

Open /etc/ssh/ssh_config on your (client) computer. Add the following line:

ServerAliveInterval 180

Just remember this -- if you leave SSH open accidentally, anyone else can get on it. Remember to close your session when finished.

source:http://linuxpoison.blogspot.com/2008/05/135781758010119.html

tutorial - Adding new splash image to grub

All you need to do is to copy splash image file to /boot/grub/ directory and edit the grub menu configuration file at /boot/grub/menu.lst and add a line

splashimage=(hd0,5)/boot/grub/splash.xpm.gz

Remember to change the (hd0,5) param for your configuration, this line shows the grub loader where it can find the image on the physical disk. Because the partitions has not yet mounted we must give the physical address by saying the bootloader the hd0 and partition number 5. You can learn your linux partition number by looking at the similar line

title Ubuntu, kernel 2.6.12-9-386
root (hd0,5)

in your grub config.

source:http://linuxpoison.blogspot.com/2008/05/13578175808975.html

tutorial - SSH login without password

If you want to use passwordless ssh login feature, you should use public key authentication mechanism. To do this, remote server must be configured to enable public key authentication (enabled by default) and you should have an ssh public/private key and store your public key at the remote side's special file: ~remote-user/.ssh/authorized_keys

Remote server setup: Check the following lines exists and uncommented in the /etc/ssh/sshd_config, if not you must add it and restart ssh server at the remote side:

RSAAuthentication yes
PubkeyAuthentication yes

Local setup: You must generate an public/private key pair for your own if it's not generated before:

ssh-keygen -t rsa

You can select defaults just hitting enter a few times. After that your public key will be in the ~/.ssh/id_rsa.pub file, you must add this file content's to ~remote-user/.ssh/authorized_keys file. You can scp to copy id_rsa.pub at the remote side and after that you can append id_rsa.pub contents into authorized_keys file at the remote side.

This is a trivial process and there is a special script utility which basically makes this copy and append task called ssh-copy-id:

ssh-copy-id remote-user@remote-host

Now, you can login without entering password

source:http://linuxpoison.blogspot.com/2008/05/13578175803021.html

tutorial - Create ISO image of directory

To make an ISO from files on your hard drive, create a directory which holds the files you want. Then use the mkisofs command.

mkisofs -o /tmp/cd.iso /home/nikesh/

This results in a file called cd.iso in folder /tmp which contains all the files and directories in /home/nikesh/.

source:http://linuxpoison.blogspot.com/2008/05/13578175802340.html

tutorial - Directory indexing

Directory indexing feature improves file access time in large directories or directories containing many files by using hashed binary trees to store the directory information. It is a good way to enable it for example on a web server which has thousands of files in a single directory:

tune2fs -O dir_index /dev/sda3

Directory index will be created for new files but you can regenerate index with:

e2fsck -D -f /dev/sda3

source:http://linuxpoison.blogspot.com/2008/05/13578175801733.html

tutorial - A Password Recovery Tool for PDF-files

PDFCrack is a GNU/Linux (other POSIX-compatible systems should work too) tool for recovering passwords and content from PDF-files. It is small, command line driven without external dependencies. The application is Open Source (GPL).

Features:

* Supports the standard security handler (revision 2 and 3) on all known PDF-versions
* Supports cracking both owner and userpasswords
* Both wordlists and bruteforcing the password is supported
* Simple permutations (currently only trying first character as Upper Case)
* Save/Load a running job
* Simple benchmarking
* Optimised search for owner-password when user-password is known

Install pdfcrack in Ubuntu

sudo aptitude install pdfcrack

pdfcrack Syntax

pdfcrack -f filename [options]

pdfcrack Example

pdfcrack suck.pdf

source:http://linuxpoison.blogspot.com/2008/05/135781758015462.html

tutorial - Migrating to ext4

Ext4 is the latest in a long line of Linux® file systems, and it's likely to be as important and popular as its predecessors. As a Linux system administrator, you should be aware of the advantages, disadvantages, and basic steps for migrating to ext4. This article explains when to adopt ext4, how to adapt traditional file system maintenance tool usage to ext4, and how to get the most out of the file system.

Current and upcoming features of ext4 that provide advantages over ext3

Feature	Advantage
Larger file systems	Ext3 tops out at 32 tebibyte (TiB) file systems and 2 TiB files, but practical limits may be lower than this depending on your architecture and system settings—perhaps as low as 2 TiB file systems and 16 gibibyte (GiB) files. Ext4, by contrast, permits file systems of up to 1024 pebibyte (PiB), or 1 exbibyte (EiB), and files of up to 16 TiB. This may not be important (yet!) for the average desktop computer or server, but it is important to users with large disk arrays.
Extents	An extent is a way to improve the efficiency of on-disk file descriptors, reducing deletion times for large files, among other things.
Persistent preallocation	If an application needs to allocate disk space before actually using it, most file systems do so by writing 0s to the not-yet-used disk space. Ext4 permits preallocation without doing this, which can improve the performance of some database and multimedia tools.
Delayed allocation	Ext4 can delay allocating disk space until the last moment, which can improve performance.
More subdirectories	If you've ever felt constrained by the fact that a directory can only hold 32,000 subdirectories in ext3, you'll be relieved to know that this limit has been eliminated in ext4.
Journal checksums	Ext4 adds a checksum to the journal data, which improves reliability and performance.
Online defragmentation	Although ext3 isn't prone to excessive fragmentation, files stored on it are likely to become at least a little fragmented. Ext4 adds support for online defragmentation, which should improve overall performance.
Undelete	Although it hasn't been implemented yet, ext4 may support undelete, which, of course, is handy whenever somebody accidentally deletes a file.
Faster file system checks	Ext4 adds data structures that permit fsck to skip unused parts of the disk in its checks, thus speeding up file system checks.
Nanosecond timestamps	Most file systems, including ext3, include timestamp data that is accurate to a second. Ext4 extends the accuracy of this data to a nanosecond. Some sources also indicate that the ext4 timestamps support dates through April 25, 2514, versus January 18, 2038, for ext3.

tutorial - Network Scanner - Abyss

Abyss is a diverse network tool designed for unix/linux with both active, and passive capabilities. It performs various types of portscans, with remote OS detection, and uses a multi-threaded model for fast simultaneous network
scans

Abyss also has sniffing capabilities based on complex BPF filters that display packet information, decode the payload, and perform passive OS detection.

AbysS Compiles on Linux, and FreeBSD. It is POSIX compliant, and should work on other unix varients running on x86.

1. Download from here
2. Unpack the tar ball - tar zxvf abyss-0.9.15-pre-release.tgz
3. Compile - type make

The README-NOW file is very descriptive, and should give full instructions
on using AbysS

Example:

Scan all the live hosts on a 30 node LAN

./abyss -p target.net/27 192.168.1.2 -o iplist
./abyss -f iplist

Passive OS Detection, while also sniffing payload and packets from all tcp traffic

./abyss -O eth0 -b tcp -h -o logfile

Sniff ftp usernames, and passwords

./abyss -O eth0 -b tcp and dst port 21 -h -o logfile

source:http://linuxpoison.blogspot.com/2008/05/13578175803104.html

tutorial - Search And Replace Text in files Recursively

regexxer is a nifty GUI search/replace tool featuring Perl-style regular expressions. If you need project-wide substitution and you’re tired of hacking sed command lines together, then you should definitely give it a try.

source:http://linuxpoison.blogspot.com/2008/05/13578175803776.html

tutorial - Remote Desktop to Windows through Linux

Gnome-RDP: Remote Desktop Client for the GNOME Desktop. Supported protocols: RDP, VNC, SSH. Configured sessions can be saved to the built in list. Additional programs required: rdesktop, tightvnc, ssh, gnome-terminal. Application can be run with Mono runtime.

Installation on Ubuntu:

sudo apt-get install gnome-rdp

Now that Gnome-RDP is installed lets fire it up:
Goto Applications->Internet->Gnome-RDP

source:http://linuxpoison.blogspot.com/2008/05/13578175809409.html

tutorial - Howto Install Wine in Ubuntu

Add the winehq repository : Open up a terminal Applications->Accessories->Terminal
Add the gpg apt key: wget -q http://wine.budgetdedicated.com/apt/387EE263.gpg -O- | sudo apt-key add -

Add the Repository via wget:
sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/hardy.list -O /etc/apt/sources.list.d/winehq.list

Update the apt sources and install the latest wine!

sudo apt-get update ; sudo apt-get install wine

Done, now you have the latest wine package installed!

source:http://linuxpoison.blogspot.com/2008/05/13578175807889.html

tutorial - Install Google Earth on Linux

Install Google Earth 4.3 by opening a terminal and issuing following commands

# wget http://dl.google.com/earth/client/current/GoogleEarthLinux.bin
# chmod +x GoogleEarthLinux.bin
# sudo ./GoogleEarthLinux.bin

The above command will install googleEarth to /opt/google-earth and create a desktop icon for all users. Click on icon to start up the Google Earth

source:http://linuxpoison.blogspot.com/2008/05/13578175809375.html

tutorial - OpenSUSE Hard Disk Configuration Survey

In order to optimize the YaST partitioner module for openSUSE users the user experience team decided to conduct a small survey to figure out how you deal with hard disk configuration. The survey contains some basic questions and its results will directly influence the redesign for the partitioner module.

The survey will be online until 28th May 2008 and the results will be published on openSUSE.org as soon as possible.

Answering the questions will take less than five minutes.

Click here to take the survey

source:http://linuxpoison.blogspot.com/2008/05/135781758012892.html