Things to remeber in linux

• Display All Information About Files/Directories Using ls -l

  
  

Things to remeber in html

• text box width is set by style property only style="width:20px" not by width property <input type="text" id="text1" name="text1" style="width:20px" />
• For putting html in the blogger you should go to this site and encode the code http://centricle.com/tools/html-entities/
  
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Things to remeber in php

Things to remember in php so that you don't dependent on google and manual.

• To push values in array $stack.
  

array_push($stack, "apple", "raspberry");

• preg_split used in youngib api for commandline interface .
  array preg_split ( string $pattern , string $subject [, int $limit = -1 [, int $flags = 0 ]] )

Indexing in database

• An index is a separate file that is sorted, and contains only the field/s you're interested in sorting on. If you create an index on employee_number, MySQL can find the corresponding record very quickly (Indexes work in very similar ways to an index in a book. Imagine paging through a technical book (or more often, an scrambled pile of notes!) looking for the topic "Optimizing MySQL". An index saves you an immense amount of time!
• http://www.databasejournal.com/features/mysql/article.php/1382791/Optimizing-MySQL-Queries-and-Indexes.htm