SEO Tools link - very useful

http://www.justsearching.co.uk/seo_tools.html

Unix command to find size of the folder in human readable format

du -sh

For further options visit : http://www.linfo.org/du.html

Looping Through Numbers with Blocks and Iterators

5.times do puts "Test" end
1.upto(5) { ...code to loop here... }
10.downto(5) { ...code to loop here... }
0.step(50, 5) { ...code to loop here... }
The first example counts from 1 “up to” 5. The second example counts from 10 “down
to” 5. The last example counts up from 0 to 50 in steps of 5, because you’re using the step
method on the number 0.

Unix/Linux find command tutorial

The Best tutorial and reference for Unix/Linux find command. Please follow the link :
http://content.hccfl.edu/pollock/Unix/FindCmd.htm

Read form data using Perl

#!/usr/bin/perluse strict;
my $formdata;
read(STDIN,$formdata,$ENV{CONTENT_LENGTH});
print "Content-type: text/html\n\n";
#Add html codes..
for( split(/&/,$formdata) ){
$_ =~ tr/+/ /;
my ($n,$v) = split(/=/,$_,2);
$n =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
$v =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
print "$n=$v\n";}
print 'add closing html codes';

Linux Basic Commands

how do I get the line, word, or character count of a fine in UNIX?
wc
Replace with the file or files for which you want information. For each file, wc will output three numbers. The first is the line count, the second is the word count, and the third is the character count. For example, if you entered wc .bashrc, the output would be something similar to the following:
13 23 709 .bashrc
The options are:
wc -l - by lines
wc -w - by words
wc -c - by bytes

How to install Drupal video tutorial

http://www.volkanrivera.com/eng/?p=13