1.Enable automatic typo correction for directory names
shopt -s cdspell
Testing

hemanth@ubuntu:/var/log$ cd /tp
/tmp
hemanth@ubuntu:/tmp$
 
hemanth@ubuntu:/$ cd /hom
/home
hemanth@ubuntu:/home$ 
 
hemanth@ubuntu:/home$ cd /mt
/mnt
hemanth@ubuntu:/mnt$ 

Step 1 : Check if bash_completion in enabled in your .bashrc.
Step 2 : Add the file attached to /etc/bash_completion.d/m2.
Step 3 : Enjoy auto-completion for Maven.

The Code Lines :
complete -F _m2_complete -o filenames mvn Indicates to apply _m2_complete for command following mvn
compgenGenerate possible completion matches for word according to the options.

Easy and fun
Things needed :
dstat
GNUPlot
This post, is not elaborating on dstat or GNUplot but rather focusing directly on how to plotting performance graph of a GNU/Linux box.

I have written a small script to plot the performance of the machine considering CPU,Memory and Network into picture.

<

pre style='color:#000000;background:#ffffff;'>#!/bin/bash

The idea is pretty simple : Embed all your tgz's below a place holder and count the lines to get each tgz and pipe tail and tar to extract them to required folder.

Steps

Step I Make a tgz file with all the source you have
Assuming we call the folder to be source, so the compressed file must be source.tgz and the source might contain any extractable files, even simple shell scripts.
Lets assume that our source folder has a build.sh script which takes care of installing each and every source.

Step 2 Make an extractor script as below
 

If you have not read the Apache HTTPS, read it before you go through this post.

"Subversion (SVN) is a version control system initiated in 1999 by CollabNet Inc. It is used to maintain current and historical versions of files such as source code, web pages, and documentation. Its goal is to be a mostly-compatible successor to the widely used Concurrent Versions System (CVS)." -Wikipedia

Steps are pretty easy now:

<i><b>Step 1:</b></i>

Hypertext Transfer Protocol Secure (HTTPS) = HTTP + SSL/TLS
Check list:
* apache sever
* openssl
Steps:

<b>For Ubuntu 10.04/Apache 2.2.14 changes suggested oregonbob:</b><a href="http://docs.google.com/View?id=dd6rgncr_151cxvhkpc5" target="_blank">here</a>
 
Step 1 : <i> Create a self-signed certificate. </i>
This include : Generate a key, Signing and avoid password
<b>
openssl genrsa -des3 -out my.key 4096
openssl req -new -key my.key -out my.csr
openssl x509 -req -days 365 -in my.csr -signkey my.key -out my.crt

Normally the Audio device: ATI Technologies Inc RS780 Azalia controller and RS* series break after an upgrade to karmic
This post is attached with a script, which will help to detect and active your sound card.{Assuming file saved as alsaconf}

<b>
sudo chmod a+x alsaconf
sudo ./alsaconf</b>

Namoroka

After Firefox3.5 ("Shiretoko") is released, the next version of Firefox will be developed under the project name "Namoroka". The Firefox version number will be "3.6" and the Gecko Platform version number will be "1.9.2". The release will be shipped as a minor update to users, replacing Firefox 3.5 ("Shiretoko").

Namoroka is to be an incremental release, building upon the success of Firefox 3.5.
How to get it

<b>sudo add-apt-repository ppa:ubuntu-mozilla-daily
sudo apt-get update
sudo apt-get install firefox-3.6
</b>
That's it!

Had a collection of GNU/Linux distros, had no time or money to buy DVD's :P so came up with this plan :

sudo mkdir /distro
sudo chmod `whoami`:`whoami`
cp MYLINUX.iso /distro/distro.iso
#EXTRACT Linux_kernel & Ram_disk TO /distro#
 
sudo nano /boot/grub/menu.lst
 
#ADD NEW ENTRY#
title GNU/Linux
root (hdX,X)
kernel /distro/Linux_kernel
initrd /distro/Ram_disk

After reboot in the menu select GNU/Linux

Distro and {Linux_kernel,Ram_disk} Pairs :

From alpha,beta or RC now you can update the *.iso image to upgrade the OS, instead of downloading the entire iso image
Very useful for people with low bandwidth
Feels very much similar to `wget -c`
zsync is the name, upgrade is the game.
Here is how to do that :

<b>
sudo aptitude install zsync
mv ubuntu-9.10-rc-desktop-i386.iso ubuntu-9.10-desktop-i386.iso
zync <url>
</b>
 
Select the URL from the <b>file attached</b>

This happens when an upgrade is done without removing the non-free graphical drivers, normally Nvidia or ATI cards.

Actually before installing you should have disable those drivers, so its crashed now.

To fix you have three options :

1. To boot from live cd (karmic), backup what data you want and do a fresh install.

2. Follow this, open your terminal after booting from live cd and then :

type this cat /etc/fstab | grep "/ was on"

the o/p will be like : # / was on /dev/sda1 during installation

To install pax on ubuntu sudo apt-get install pax the manual is attached with this article.
"pax will read, write, and list the members of an archive file, and will copy directory hierarchies. pax operation is independent of the specific archive format, and supports a wide variety of different archive formats."

Here are few examples from the manual which exhibits the power of pax:

pax -w -f /dev/rst0 .

Copies the contents of the current directory to the device /dev/rst0

pax -v -f filename

The Changelog of Karmic read so :


software-properties (0.75) karmic; urgency=low

* new helper script "add-apt-repository" that can be used to
enable a repository from the commandline. Useful for e.g.
'add-apt-repository ppa:gnome-desktop'
* fix error in auto-upgrade settings when
dpkg-reconfigure unattended-upgrades was used (LP: #387704)
* po/zh_TW.po:
- updated, thanks to Roy Chan (LP: #365040)
* softwareproperties/kde/SoftwarePropertiesKDE.py:
- do not error on cancel (LP: #364288)

PyGoWave Server | Google wave server needs the following :

Python 2.6.1
Django 1.0.2
Orbited 0.7.7
RabbitMQ 1.6.0
Python libraries

lxml 2.2
PIL 1.1.6
carrot 0.5.0
Optional:

django-rosetta 0.4.0

JavaScript libraries:
MooTools 1.2
MochaUI 0.9.5

Get the dependencies :

sudo apt-get install python-mysqldb

sudo easy_install carrot

easy_install --find-links http://www.pythonware.com/products/pil/ Imaging

sudo apt-get install mercurial

Get Python : sudo apt-get install python

Get Django :

1) Get curl

sudo apt-get install curl

2) Build deps :

sudo apt-get install libgnomeui-dev librsvg2-dev libreadline5-dev libwnck-dev python2.5-dev libgstreamer-plugins-base0.10-dev libgl1-mesa-dev libffi-dev xulrunner-1.9-dev mesa-common-dev gtk-doc-tools subversion git-core bison flex

3) Exec the script

bash gnome-shell-build-setup.sh

4) Build the source

~/bin/jhbuild build

Replacing :

1) Go to the folder of the GNOME Shell:

cd ~/gnome-shell/source/gnome-shell/src

2) execute the command sequence to start the GNOME Shell:

./gnome-shell

After OOTwitter i tired a similar one for indeti.ca, the steps are as before you download the file from the attachment.

Question : How to twitt from open office?

Download and open this :OOTwitter

Now goto :
Tools -> Macros -> Organize macros -> OpenOffice. Org Basic.
Edit the OOoTwitter "username:yourpassword" to yours
Restart OO and then Tools-> Add-ons -> Post to Twitter
Now Twitt from OO :O)

Understanding the code :


'************************************************************
' POST TO TWITTER
'************************************************************

How to use the real-time Earth wallpaper script for Linux

1.Save code part to a file, say change.sh

while [ 1 ]; do
COUNTER=0
while [ $COUNTER -lt 60 ]; do
wget http://www.opentopia.com/images/cams/world_sunlight_map_rectangular.jpg -O world.jpg
temp=$(stat -c%s world.jpg)
if [[ $temp > 1000 ]]
then rm world_sunlight_Wallpaper.jpg
mv world.jpg world_sunlight_Wallpaper.jpg
break
fi
sleep 5
let COUNTER=COUNTER+1
done
sleep 3600
done

2. Create a new folder in your home partition, say wall.
3. Set permissions and run :

$ cd ~/wall

P.S : The below discussion is considering AMD/ATI into frame.

AMD Phenom has many variates the latest belonging to family(16) model(4) stepping(2) with flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc pni monitor cx16 lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skin.

Normally while updating an application in GNU/Linux, we download the source and compile and install it. Sometimes we find it hard to install when there are many dependencies.

Consider an example of installing Pidgin and IM, the latest version is 2.6.1, if we start compiling from source we come across few dependencies.

In normal procedure we would have to find the dependencies manually and install them with APT or aptitude.

Long awaited in the list, voice support for pidgin for GNU/Linux is out, most of them were on Skype all these days for Voice and Video, not any more i feel, with this advancement it's nice to hear and talk also.

Howto install from source:

For Ubuntu user, you may just setup from PPA :

To setup the PPA, copy-and-paste these commands into a terminal:

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com \ 67265eb522bdd6b1c69e66ed7fb8bee0a1f196a8
echo deb http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu \ `lsb_release --short --codename` main | \

Eclipse is not mere an IDE, it's smart!
Open source community and non-profit organization.
"Borland, IBM, MERANT, QNX Software Systems, Rational Software, Red Hat, SuSE, TogetherSoft and Webgain formed the initial eclipse.org Board of Stewards in November 2001".

<

p>As the moon eclipses the sun, your mind would be eclipsed by Eclipse such that you fall in <3 with this smart peace of technology, it has a lavish support on different coding languages and many plug-ins to meet your needs.

All in all it a must try and one of the famous IDE, all most all the coder are aware of.

Karmic users, can upgrade to the latest packages.

Users of 9.04 :

echo 'deb http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu jaunty main' >> /etc/apt/source.list


To verify the integrity of these packages by installing the archive's GPG key.Download the attached key and do an import.
gpg --import key
Then do a normal update sudo apt-get update
sudo apt-get upgrade
You might be warned during installation check the packages and say yes to install.

There RFC 2229 defines the The Dictionary Server Protocol (DICT) is a TCP transaction based query/response protocol that allows a client to access dictionary definitions from a set of natural language dictionary databases.

The most common play with the DICT , that most people are aware is :

curl -s dict://dict.org/d:word


Exploring this a more , and using few quick cli utilities i tried the below.

But with the most common method as mentioned above the negative aspect is reflected when we have a huge list of words for which you are in need of it's meanings.

Here is a small trick i tired to find the weather from the terminal.
The simple code below , gives you the update of current weather in Bangalore.
You may change it to your place by changing the feed as per requirement.

Follow these steps :

$ sudo vi ~/.bashrc
 
Add this at the last :
 
alias tmp="curl -s --connect-timeout 30 "http://newsrss.bbc.co.uk/weather/forecast/1193/ObservationsRSS.xml" | grep "Temperature" | sed -e 's/&#xB0;/ deg /g' | sed -e 's/&#37;/%/g'| sed 's/<[^>]*>//g'"
 
Save and close the file .
 
Now , 
source ~/.bashrc
Then,
$ tmp 

xclip reads from standard in, or from one or more files, and makes the data available as an X selection for pasting into X applications. Prints current X selection to standard out.

To install sudo apt-get install xclip

How to work with xclip , say for example you want an output of a command in your X selection , after running commnad | xclip , you can just middle click your mouse to paste the output or else you may use the -o option  xclip -o /path/file-name .

Say for example :

uptime | xclip

Follow these steps :
Ubuntu 8.10 Interpid :

sudo sh -c "echo 'deb http://ppa.launchpad.net/c-korn/vlc/ubuntu intrepid main' >> /etc/apt/sources.list"

Ubuntu 9.04 Jaunty jackalope :

sudo sh -c "echo 'deb http://ppa.launchpad.net/c-korn/vlc/ubuntu jaunty main' >> /etc/apt/sources.list"

Then add the verification key GPG

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7613768D

Now install vlc using the command :

sudo apt-get update && sudo apt-get install vlc vlc-plugin-esd mozilla-plugin-vlc