VI Editor

http://www.eng.hawaii.edu/Tutor/vi.html

http://www.smashingmagazine.com/2010/05/03/vi-editor-linux-terminal-cheat-sheet-pdf/

http://www.cs.colostate.edu/helpdocs/vi.html

http://www.lagmonster.org/docs/vi.html

http://www.eec.com/business/vi.html

http://www.unixwiz.net/techtips/putty-openssh.html

http://www.techmalaya.com/2009/08/05/setup-ssh-server-for-windows-freesshd/

http://tortoisesvn.net/ssh_howto.html

http://www.truecrypt.org/downloads

http://www.perl.org/get.html

http://strawberryperl.com/releases.html

http://www.basicconfig.com/linux/vi

http://ubuntuforums.org/archive/index.php/t-3771.html

http://linuxservertutorials.blogspot.in/2008/11/ubuntu-command-line-text-editor.html

http://freshtutorial.com/basic-ubuntu-command-tutorial-for-beginners/

http://www.thegeekstuff.com/2009/11/ping-tutorial-13-effective-ping-command-examples/

http://forums.bizhat.com/linux-freebsd-opensource/36989-useful-ubuntu-terminal-commands.html

http://beginlinux.com/twitter/1094-the-beginners-guide-to-the-ubuntu-terminal

https://help.ubuntu.com/8.04/basic-commands/C/files-directories-commands.html

http://www.pixelbeat.org/cmdline.html

http://linuxcommand.org/writing_shell_scripts.php

http://www.unixguide.net/linux/linuxshortcuts.shtml

http://linuxcommand.org/learning_the_shell.php

http://joel.franusic.com/w/page/26128430/Online-REPs-and-REPLs#Perl
http://www.bluishcoder.co.nz/jsscheme/
http://www.linuxforums.org/articles/learn-perl-in-10-easy-lessons-lesson-1_120.html
http://learnperl.scratchcomputing.com/tutorials/configuration/
http://perl-begin.org/learn/
http://pdl.perl.org/?docs=MATLAB&title=PDL::MATLAB
http://perl-begin.org/tutorials/perl-for-newbies/part1/#page--DIR
http://portal.aauj.edu/portal_resources/downloads/programming/oreilly_learning_perl.pdf
http://pdl.perl.org/?docs=Scilab&title=PDL::Scilab
http://www.perlmonks.org/?node_id=860
http://www.learnphp-tutorial.com/
http://www.thefreecountry.com/compilers/perl.shtml