Sunday, February 28, 2010
for ubuntu users ppa archive available here
$ sudo add-apt-repository ppa:guadalinex-members/ppa
$sudo apt-get update
Or You can install through synaptic package manager
Posted by shibu V at 8:31 PM
Saturday, February 27, 2010
X Rezise and Rotare (xrandr) is a utility available in your Linux system for reseting and resizing your screen resolution. It is a command line utility. so if your display disapperaed ?? No problem you can do it from a Terminal (Press Ctrl+Alt+f1).
First You have to find the possible resolutions with xrandr -q
$ xrandr -q
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1024 x 1024
VGA connected 1024x768+0+0 (normal left inverted right x axis y axis) 270mm x 200mm
800x600 85.1 75.0
640x480 85.0 85.0 75.0 59.9
Now you can set your resolution with command
$ xrandr -s 1024x768
$ man xrandr
Posted by shibu V at 10:17 PM
Thursday, February 25, 2010
How to install cpulimit in Ubuntu / Debian
Open a Terminal and Type the following command to install cpulimit:
$ sudo apt-get install cpulimit
To limit CPU usage of the process called firefox to 40%, enter:
# cpulimit -e firefox -l 40
To limit CPU usage of the process to 40% by using its PID, enter:
# cpulimit -p 1313 -l 40
To find out PID of the process use any of the following:
# ps -u shibu (list all process for the use shibu)
# ps aux | grep firefox
You can also use absolute path name of the executable, enter:
# cpulimit -P /opt/firefox/firebox -l 40
* -p : Process PID.
* -e : Process name.
* -l : percentage of CPU allowed from 0 to 100 for singe processor.
* -P: absolute path name of the executable program file.
Wednesday, February 24, 2010
Simply you can control a relay through Pic Microcontroller. See a simple circuit for controlling a single relay with pic 16f628. When RB5 port of pic become High the relay will operate. This Circuit works with non-latching ralays(commonly used relays are non-latching)
Posted by shibu V at 2:44 PM
Tuesday, February 23, 2010
This is for system Administrators and power Users
How can you Setup a Static IP Address from command Line.
This is applicable for Debian / Ubuntu and Its Clones
First You have to remove Network Manager .
Then edit the file /etc/network/interfaces with admin privilege
$ gksu gedit /etc/network/interfaces
add the Ip as per your needs ( example I am Going to setup IP address 192.168.0.5):
Posted by shibu V at 4:12 PM
Sunday, February 21, 2010
You can Change your User Password and Profile easily in Ubuntu.
Select the menu System--> Preferences --> About Me
Now You will get a screen as Below. At right top corner you can select change password and change your password
Posted by shibu V at 8:41 PM
Tuesday, February 16, 2010
Workrave is a Free Software that assists in the recovery and prevention of Repetitive Strain Injury (RSI). The program frequently alerts you to take micro-pauses, rest breaks and restricts you to your daily limit. It tracks all of your keyboard and mouse activity . It Supports Several Languages. It shows a slide show for exercises. Very useful ans a must for All computer professionals.
How to Install in ubuntu / Debian Linux
$sudo apt-get install workrave or use synaptic package Manager
Posted by shibu V at 8:22 PM
Monday, February 15, 2010
By using a Nice utility Gloobus you can view almost all file type. Gloobus is a free application for GNU / Linux . Gloobus-Preview is an extension for the Gnome Desktop designed to enable a full screen preview of any kind of file. It allows instant access to a variety of file types without the need of opening their default application.
You can access the preview mode from several ways, right click on the file you want to preview and choose “Preview” or simply hit the Space key on your keyboard.
Gloobus can currently preview over 40 file formats and its family is still growing:
Images: jpeg / png / icns / bmp / svg / gif / psd / xcf
Documents: pdf / cbr / cbz / doc / xls / odf / ods / odp / ppt
Audio: mp3 / ogg / midi / 3gp / wav
Video: mpg /avi / ogg / 3gp / mkv / flv
Other: folders / ttf / srt / plain-text
How to Install In Ubuntu 9.10
Finally, restart nautilus
Posted by shibu V at 10:32 PM
Most of the research workers and Engineering Students need to make their Project Work and thesis work in Latex. Now Latex is not a nightmare, Lot of Graphical Front end softwares are available for Latex. Here You can See a simple Lightweight Lates Editor for Linux Users. It is written in python
You can Download Deb file from Here
Double click on deb file and install with gdebi
Posted by shibu V at 8:22 PM
Sunday, February 14, 2010
Pino is a Client for Twitter in GNU/Linux. It is a Gnome application
How To install Pino in Ubuntu
First You have to add PPA for Pino
open a terminal
Posted by shibu V at 1:29 PM
If you want add a ppa repository , youu need to add some lines in /etc/apt/sources.list and also need to add the GPG key. I think it not easy for beginners. Now See a simple technique to add ppa with add-apt--repository
open a terminal and add the following line for adding vala-team/ppa
$ sudo add-apt-repository ppa:vala-team/ppa
Posted by shibu V at 1:07 PM
Wednesday, February 10, 2010
Songbird is a opensource Media Player and a web browser, from the developers of wimamp and Yahoo Music Engine. Songbird is a cross platform utility can be used in Windows, Linux, Solaris and Mac. Like Winamp, it supports extensions and skins feathers. It supports a variety of file formats and is an excellent option for organizing your music files in your system. It is derived from mozilla supports Searching for extensions and plugins.
Howto Install Songbird for Ubuntu
Download Songbird from here
You will get the tar.gz file Current Version
Change file permissions
$sudo chmod -R 755 Songbird or (chown -R shibu:shibu Songbird)
You can add /opt/Songbird/Songbird to your Menu.
Tuesday, February 9, 2010
Ubuntu Security team announced a major security alert to users of Ubuntu On February 5th .The security flaw is found in the kernel of the different versions of Ubuntu. This makes it vulnerable to the system, allowing the escalation of privileges and gain control of the system by an attacker.
List of affected Ubuntu releases:
Ubuntu 6.06 LTS Ubuntu 6.06 LTS
Ubuntu 8.04 LTS Ubuntu 8.04 LTS
Ubuntu 8.10 Ubuntu 8.10
Ubuntu 9.04 Ubuntu 9.04
Ubuntu 9.10 Ubuntu 9.10
It is important to resolve it, update your kernel to the latest version available. Something that many have already done but it is worth remembering. The importance of this fact is not in the bug is. It is in how fast it is resolved and as the user community has turned to communicate in all media achievable.
More info : Ubuntu Security Notice USN-894-1
Monday, February 8, 2010
Backup of database is very important in Database Projects. You can recover your data when problems occurs. A variety of backup strategies are used in MySQL. You can choose any one of them. This can also use for Installing your Software from One system to Another. This Method is not Distribution Specific, You can Use same command in Fedora, Mandriva, Debian, SUSE etc.. My Heading is for helping Ubuntu users in Search.
Export / Backup MySQL database:
Utility named mysqldump can be used to dump a database or a collection of databases for backup or for transferring the data to another MySQL server. The dump file is a text file which contains SQL statements to create the table and/or populate the table.
# mysqldump -u USERNAME -p DATABASENAME > FILENAME.sql
USERNAME is the MySQL admin user
DATABASENAME is the name of the database that need to be exported /Backup
FILENAME.sql is the name of the file where your data will be exported
Now It will ask for password,Enter MySQL admin password.
You can dump all databases by doing:
# mysqldump -u root -p --all-databases > all_my_data.sql
# mysql -u USERNAME -p DATABASENAME < FILENAME.sql
You will be prompted for the MySQL administrator password.
Posted by shibu V at 11:08 PM
Sunday, February 7, 2010
Stellarium is a free open source planetarium Software for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.
- default catalogue of over 600,000 stars
- extra catalogues with more than 210 million stars
- realistic Milky Way
- Drawing of the 88 constellations with their names
- Drawing of more than 40 messiers objects (Orion, M31 etc..)
- very realistic atmosphere, sunrise and sunset
- the planets and their satellites
- a powerful zoom, time control
- telescope control
- eclipse simulation
How to Install Stellarium in Ubuntu / Debian Linux
Open a terminal
Thursday, February 4, 2010
SSHMenu is a GNOME panel applet , that helps you for managing all of your regular SSH connections within a single mouse click. Each menu option will open an SSH session in a new terminal window.
imagine if every time you connected to a Critical server the terminal window had a red-tinted background, to remind you to tread carefully. Using terminal profiles, SSHMenu allows you to specify colours, fonts, transparency and a variety of other settings for each connection. You can also set window size and position.
How to Install SSHMenu in Ubuntu
Open a Terminal
Posted by shibu V at 10:53 PM
Wednesday, February 3, 2010
A useful development environment for PHP/HTML/CSS in Ubuntu and other Linux Platform. gPHPEdit is a GNOME2 editor for editing PHP files and other supporting files, like HTML/CSS. It has support for drop-down function lists, hints showing parameters, and syntax highlighting.
Howto Install GPHPEdit in Ubuntu
Open a Terminal
or use Synaptic PAckage Manager
Posted by shibu V at 8:54 PM
Tuesday, February 2, 2010
Gbrainy is a Linux Utility to train memory, arithmetical and logical capabilities with many sorts of different exercises of different difficulty levels. It is not only for Kids, It should have something for all ages. It can be used for Develop the capabilities of your Kid, Others who want to keep their mind in form or just try it out for fun, older people can do some memory exercises, etc.
It provides the following types of games:
* Logic Puzzles: games designed to challenge your reasoning and thinking skills.
* Mental Calculation: games based on arithmetical operations designed to
prove your mental calculation skills.
* Memory Trainers: games designerd to challenge your short term memory.
How to Install Gbrainy in Ubuntu
Open a terminal
Posted by shibu V at 9:21 PM
Monday, February 1, 2010
swfdec-gnome is a very good Tool to play SWF files (Macromedia Flash) on GNOME. This package contains programs to integrate Flash functionality into the GNOME desktop. It's main application is swfdec-player, a stand-alone viewer for Flash files. It also contains swfdec-thumbnailer, a program that provides screenshots for files to display in the Nautilus file manager.
How to Install in Ubuntu
Open a Terminal
$ sudo apt-get install swfdec-gnome
or use Synaptic package manager
Posted by shibu V at 8:00 PM