GNUbie

WM 2010 Cool T shirt

2010-03-24T08:58:00.000-07:00

Hi all,

WM shirt This is cool website to buy WM 2010 Shirts Its cheap and best quality and lots of cool offers and fun around in the website. http://wm2010shirt.de/

My friends website

2008-01-11T15:29:00.000-08:00

My friend Addo is developing pages for the site www.gewinn5000.de , Hey google cache it ;)

My GNU Radio Presentation

2007-12-21T09:03:00.000-08:00

Recently I made a presentation on Gnu Radio for an academic topic "Software Defined Radios". The Topic was handled by Prof K.Moessner from University of Surrey. End of the lecture was to make a presentation of what we came to know about SDR. I took Gnuradio and made some search and research ;) , and found many interesting things and links, but for the presenatation i made very precise one with limited topics coverage. To view my presentation click here GNURadio
Plz let me know u r comments and feedbacks ,

2007-08-20T04:56:00.000-07:00

From:
A Kid Playing with Internet,
Care of Computer,
localhost.localdomain.

To:
All Internet User,
Care of Networks of Network.
World Wide Web.

Subject:Informing about a website www.postbytes.com and its siblings.

Dear Browsers,

I am very glad to take this opportunity to inform you all that, The upcoming website www.postbytes.com and its siblings. jobs.postbytes.com and videos.postbytes.com are doing really good. Do take time to visit the site and register there. After all sharing information is the Ultimate thing in internet ;)

Thanks,
Kid.

GNU Sather

2007-07-08T11:10:00.000-07:00

http://www.gnu.org/software/sather/

GNU Sather is an object-oriented programming language designed to be
simple, efficient and safe. It aims to be appropriate for use in
teaching, research, and industry.

It was originally based on Eiffel but now incorporates ideas and
approaches from several languages. One way of placing it in the "space
of languages" is to say that it attempts to be as efficient as C, C++,
or Fortran, as elegant and safe as Eiffel or CLU, and to support
higher-order functions as well as Common Lisp or Scheme.

GNU Sather is an object-oriented language with garbage collection,
statically-checked strong typing, multiple inheritance, separate
implementation and type inheritance, parameterized classes, dynamic
dispatch, iteration abstraction, higher-order routines and iterators,
exception handling, assertions, preconditions, postconditions, and
class invariants. Code can be compiled into C code and can link with C
object files.

Sun's GNU/Linux Offerings

2007-07-06T22:06:00.000-07:00

Running Industry leading Linux on Sun: Sun brings a comprehensive systems approach to GNU/Linux-based operating systems. Sun provides Java technology, x64-based servers and workstations, Red Hat Enterprise Linux, and SuSE Linux Enterprise Server along with Sun's Java Enterprise System and suites. Sun also works with Canonical Ltd. to certify and support its x64 based systems and CoolThreads servers on Ubuntu Linux.

* Linux and Solaris—A common heritage: Coming from the same roots, Solaris and Linux are complementary and a natural fit to work together. Now with Solaris Containers for Linux Applications you can run Linux applications unmodified on Solaris. » More
* The Linux community: Sun is one of the largest contributors to the GNU/Linux operating system. It has made substantial contributions to such key areas as Mozilla, GNOME and X.ORG as well as turning StarOffice over to the community in the form of OpenOffice.org.
* Sun's Open Source commitment: Sun has opened more lines of source code than any other company including its three most strategic technologies: Solaris, SPARC, and the Java Platform. Sun continues to be widely involved with many free and open source communities.

Chk this link

Bash Magic Tricks

2007-07-06T04:08:00.000-07:00

Bash Magic Tricks

Introduction:
Bash or Bourne Again shell is the first thing that fascinated me in GNU/Linux. It has most of the
feature of some of the popular shell such as ksh, csh etc. From novice user to geekish hacker
everybody prefers bash for its powerful features. Bash is the default shell in all the GNU/Linux
distro coming nowadays, and not only Linux also other *nix operating system uses bash as their
shell. When I started using it, I began discovering lot of tricks which fasten my work which now
I'm sharing with you all. This article is for those who are already familiar Bash and who want to
work in lightening speed.

What's your editor?
The Bash works in two modes "Vi" mode and "Emacs" mode. In Vi mode the short cut keys
which are used in Vi editor can be applied over the bash, same like in Emacs mode it emulates
Emacs shortcut keys. you can decide which mode to work with based on your choice. Emacs
mode is set by default.

Set Emacs Mode in Bash:

set -o emacs

Set Vi Mode in Bash:

set -o vi

Shortcuts that work in Emacs mode:

Ctrl + l - Clear the screen
Ctrl + a - Move cursor to beginning of line
Ctrl + e - Move cursor to end of line
Alt + b - Move cursor back one word
Alt + f - Move cursor forward one word
Alt + backspace - Cut the word before the cursor
Ctrl + w - Cut the last word
Ctrl + u - Cut everything before the cursor
Ctrl + k - Cut everything after the cursor
Ctrl + y - Paste the last thing to be cut
Ctrl + r - Search the history
Ctrl + _ - Undo
And lot more Emacs shortcuts.

Below are the list of shortcut keys which working vi mode, Don't forget to hit escape before
executing any shortcut.

h - Move cursor left
l - Move cursor right
A - Move cursor to end of line and put in insert mode
0 (zero) - Move cursor to beginning of line (doesn't put in insert mode)
i - Put into insert mode at current position
a - Put into insert mode after current position
dd - Delete line (saved for pasting)
D - Delete text after current cursor position (saved for pasting)
p - Paste text that was deleted
/ - to search in the history commands
u - Undo
Tab Tricks:
Everyone will be familiar with the Tab key feature; it is widely used in auto completion in most
of the terminals. In bash tab key does lot of auto completion based on the first letter typed, here
"2T" means Press TAB twice.

$ 2T - List all available commands.
$ (string)2T - List all available commands starting with (string)
$ /2T - List entire directory structure including Hidden one
$ 2T - List only Sub Dirs inside including Hidden one
$ *2T - List only Sub Dirs inside without Hidden one
$ ~2T - List all Present Users on system from "/etc/passwd"
$ $2T - List all System variables
$ @2T - List entries from "/etc/hosts"
$ =2T - List output like ls or dir
Complete your last argument:

Are you tired of typing this
$cp important.txt /home/neo/archive/collection/important/confidential/personal
and you still have to copy many files?
$cp onemore.txt (Press Alt+. Or Esc and then .)
Bash will fill your last argument from the last command typed
$cp onemore.txt /home/neo/archive/collection/important/confidential/personal

Recollecting from history:
Bash has feature to recollect commands from the history, but instead of searching from the
history you can use '!' and then type first character of the command. It is one another way of
executing from the history for further information read man page of 'history'.

$/sbin/ifconfig
$dmesg
$!d
will expand and execute
$dmesg
samelike
$!/ will give the output of ifconfig
Push and pop to navigate between directories:
We can push our directories into a directory stack, and pop when needed. Sometimes we need to
access many long path of directories, we can save it by pushing it to directory stack. pushd and
popd are the builtin
used to push and pop the directories, they use $DIRSTACK variable. pushd
is like cd, but it also pushes the current working directory onto a stack before changing

directories. popd pops the top of the stack and returns you to the previous directory.
$ pwd
/home/neo/arm
$ pushd /usr/share/doc/bash
/usr/share/doc/bash /home/neo/arm
$ pwd
/usr/share/doc/bash
$ popd
/home/neo/arm
$pwd
/home/neo/arm
Go Back:
Bash stores the previous directory path in the variable $OLDPWD. Suppose you have moved
from home directory to another directory and you want to get back to you home directory then
follow the example.

$ pwd
/home/neo
$ cd /usr/share
$ cd $
pwd
/home/neo

Auto corrects the path:
When ever we change to a directory using cd command it is possible to make mistakes while
typing the path. We can avoid getting stuck there using shopt. Using the below option we can
autocorrect our mistake and continue our job without any delay.

$ shopt -s cdspell
Some typo mistake and their correction by bash
$ cd /vra
/var
$
$cd /vr/lg/
/var/log
$cd ver
/var
$
Bind your keys:
As a regular Linux user, one will have some set of command which they will run often. Make it a
shortcut key so that you save your typing time spending jus one second. Bind command lets you
to map a key or key combination for an existing command or set of commands

Single shot to connect to your remote server:
Say you regularly connect to remote server for working, make it a shortcut key using below

example.
$bind '"\M-k"':"\"telnet matrix\C-m\""
or
$bind '"\M-k"':"\"ssh neo@matrix\C-m\""
Type Alt+k and see the magic
Make your Dash board:
Monitoring a machine consist of many aspect such as memory, disk usage, process, network,
peripherals. Typing the commands and monitoring these components one by one is simply time
consuming and also tedious. Imagine dashboard functionality in a single key press 'F12'. Use this
example and add or remove monitoring command based on your choice.

bind '"\e[24~"':"\"dmesg|tail -n 6;cat /proc/net/dev;ps;w;uptime;df -h;cat /proc/meminfo\C-m"""
Press F12 Key and get the dashboard info
Lot more things can be done with bind for further information read bind documentation

Confirm your logout:
Many of us accidentally press Ctrld
(logout) when trying some short cut keys and gets logged
out of that session. To avoid it set the below line , it will ignore the EOF i.e. Ctrld
once, the
second time when you give Ctrld
it will log out, instead of 1 you can also make your own choice
of count.

$export IGNOREEOF=1

Substitute and execute:
This tip is very useful when we are working in a remote machine especially low bandwidth or
high traffic connection. if you do a single mistake it will takes too much time to correct it.

$less /usr/she/doc/bash/FAQ

The above command will fail since "share" is misspelled as "she". To correct it, instead of going
by native method of using arrow keys use the below example. This will substitute the misspelled
with correct and execute it.

$^she^share^
The syntax is $^^^

(NOTE: It changes only the first occurrence of the pattern from left to right)

Conclusion:

These trick will really help us to fasten our work, also makes life easier. Still there are many
hidden tricks in bash, it needs some time for me to consolidate it and make another part of this
article. For any queries/suggestion feel free to contact me at mail2krish[at]gmail[dot]com

My Python Journey starts with a project

2006-11-20T09:45:00.000-08:00

I have made a python program for translating german to english vice versa, we can do for all languages but this is my own requirement so restricted with it. here is the project tree

http://code.google.com/p/pytrans/

feel free to mail me u r sugession to mail2krish@gmail.com

Greping two word from a file

2006-10-07T01:56:00.000-07:00

Grep Trick

$ cat main.c |grep -Rin "fork\|sleep"

This will list the line having either fork or sleep from the file main.c

Translator <-> Compiler <-> Convertor

2006-09-10T13:54:00.000-07:00

I have listed some of the script/language/file convertor/translator hope this will be useful for ppl who knows any of the scripting language try to convert
to the other may be for some reason

a2p - Awk to Perl translator

s2p - Sed to perl translator

perlcc - perl to executable compiler , it also produces .c file.

shc - shell script to executable, it also produces .c file.
< http://www.datsi.fi.upm.es/~frosal/sources/shc.html >

html2text - an advanced HTML-to-text converter

There are lot to list but m not familiar of those comment on this to grow it more

Some Useful Yet UnPopular Short Cuts in BASH

2006-08-21T11:53:00.000-07:00

Here "2T" means Press TAB twice

$ 2T - All available commands(common)
$ (string)2T - All available commands starting with (string)
$ /2T - Entire directory structure including Hidden one
$ 2T - Only Sub Dirs inside including Hidden one
$ *2T - Only Sub Dirs inside without Hidden one
$ ~2T - All Present Users on system from "/etc/passwd"
$ $2T - All Sys variables
$ @2T - Entries from "/etc/hosts"
$ =2T - Output like ls or dir

Alt + < - Move to the first line in the history
Alt + > - Move to the last line in the history
Alt + ? - Show current completion list
Alt + * - Insert all possible completions
Alt + / - Attempt to complete filename
Alt + . - Yank last argument to previous command
Alt + b - Move backward
Alt + c - Capitalize the word
Alt + d - Delete word
Alt + f - Move forward
Alt + l - Make word lowercase
Alt + n - Search the history forwards non-incremental
Alt + p - Search the history backwards non-incremental
Alt + r - Recall command
Alt + t - Move words around
Alt + u - Make word uppercase
Alt + back-space - Delete backward from cursor

courtesy : http://linuxhelp.blogspot.com

How Does the software driver finds the Hard Bad sector of the Hard Disk

2006-08-08T11:31:00.000-07:00

Only Recently I came to know finding the bad sector in Hard Disk is done in software driver

One sector of hard disk is equal to 512 Bytes of data when read normally but the hard disk also give additional information in extra four bytes which are not available normally ,

One sector is equal to 516 Bytes 512 Bytes of data + 4 bytes for ECC (Error Correction Code)

Even in intel x86 Bios there is a provision to read out the sector with those four bytes using INT 13

To Read without four bytes ECC
AH=02h
INT 13h

To Read with four bytes ECC
AH=0Ah
INT 13h

ECC is a checksum of sector data

C Program without a main function

2006-07-19T07:12:00.000-07:00

Hey Any body know how to compile a c program which does not have a main function
here it is
_______________[test.c]___________________________
void
hello ( void )
{
printf ( "Hello World\n" );

}
__________________________________________________

$gcc test.c -nostartfiles
/usr/bin/ld: warning: cannot find entry symbol _start; defaulting to 00000000080481e0
$./a.out
Hello World$

That it

How to resize an image file

2006-07-14T14:30:00.000-07:00

Recently I had a requirement to resize the jpg photos to smaller size , here is the script

for file in `ls *.jpg`
do
convert -resize 450x450 $file new-$file
done

My Sweet Home and My School

2006-06-30T12:03:00.000-07:00

A Contradictory Sculpture, A Python eats up GNU

2006-06-16T11:34:00.000-07:00

No need to explain socket if you see this i think

2006-05-25T11:02:00.000-07:00

Shell compiler

2006-05-13T10:31:00.000-07:00

I found a use ful tool which converts the shell script in to a executable binary file and also give a c file output which can be altered later
the Man page is linked below
http://www.datsi.fi.upm.es/~frosal/sources/shc.html
You can down load the latest from here
http://www.datsi.fi.upm.es/~frosal/sources/

HAHA very funny (Adults Only)

2006-05-01T02:40:00.000-07:00

The Kernel Developers Snap (RARE)

2006-05-01T01:01:00.000-07:00

BABA jus what they say

2006-04-30T03:08:00.000-07:00

uHOW-TO - How to create self extracting archive

2006-04-22T15:04:00.000-07:00

1. get your tgz file [eg test.tgz]
2. paste the below snippet in self.ext
--------------------------------------------------------------------------
SKIP=`awk '/^__ARCHIVE_FOLLOWS__/ { print NR + 1; exit 0; }' $0`
tail +$SKIP $0 | tar xz
exit 0
__ARCHIVE_FOLLOWS__
--------------------------------------------------------------------------
3. cat self.ext test.tgz >extract.sh
4. chmod +x extract.sh
5. move the extract.sh to some other location and execute it
(i.e) $./extract.sh
your self extracter is ready

uHOW-TO - How to change the Duplex mode of the network interface

2006-04-16T00:36:00.000-07:00

Tool : mii-tool -- view, manipulate media-independent interface status
To change the interface to work in Half-Duplex mode
#mii-tool -F 10baseT-HD eth0
To change the interface to work in Full-Duplex mode
#mii-tool -F 10baseT-FD eth0

more option using the tool are welcome

All about Lucid dreaming and OOBE

2006-04-10T12:58:00.000-07:00

When i started realizing dream as a great thing , i came to know a lot abt the
world after falling asleep , as i walked thru many pages and some links in he web came to lot of interesting thing abt dreaming , i dont mean the normal dream which a person has when hes asleep , but the Lucid dreaming and OOBE the next step to it. Lucid dream is a dream which is realized by the person as dream when he is asleep and it is of full control , a good Lucid dreamer can come out of his body and can roam around all over the world .this is not related with sprit ot satan or evil or anything but a relation bw body and mind . OOBE is out of body experience which is felt by many people around the world without their knowledge , this is often seen in the case of small child , researches say that these infant roam around along with Lucid dreamer freely in the space

Links
http://www.dreams.ca/lucid.htm

uHOW-TO - How to mount loop devices

2006-04-10T10:31:00.001-07:00

$dd if=/dev/zero of=test.img bs=1M
#mkfs.ext3 test.img
#mount -o loop test.img /mnt/loop

A Tip in Linux #004

2006-04-09T00:33:00.000-07:00

command: du estimate file space usage
usage:
$du -h --max-depth=1
This will list the file or directory size completely and shows only one level very useful when we need to find space occupied by the directory

A Tip in linux #003

2006-03-31T10:32:00.000-08:00

Use color option in grep command to get colored output for keyword

$export GREP_COLOR=34
$grep --colour=always "test" *

will highlight your matched text in blue color
for permanent sol write to .bashrc

A Tip in linux #002

2006-03-31T10:22:00.000-08:00

No need of Makefile to compile a single C file
Ex:
hello.c
-----------------------
void main()
{
printf("Hello World\n");
}
----------------------
$make hello
cc hello.c -o hello
$./hello
Thats all Folks.

2006-03-25T22:12:00.000-08:00

I found a funny explanation for computer technology with a western tiolet
the thing is that it applies completely , really cool

A Tip in linux #001

2006-03-25T10:19:00.000-08:00

about : less command is used to view a file in a scrollable view ,
tip : press 'v' to open the file in vim from less, and quit vim to come back to less viewer

Hello World

2006-03-25T08:29:00.000-08:00

This is my first blog , this will have lots tipntrick in linux and philosophy and my experience with this world