Rajnikant Reloaded

1. Recently china airports were closed due to heavy fog....... later it was discovered that rajanikanth was smoking in india!!!!!!!!!!
2. Rajanikanth did his kg from seven different places..today those places are known as iits!!!!!!
3. The government of india pays tax to Rajanikanth for living in india!!!!!!!
4. Definition of solar eclipse : when Rajanikanth stares at sun with anger, sun hides behind the moon. this greatest phenomena is called solar eclipse.........!!!!!
5. Rajanikanth woke up one day and decided he should share atleast one percent of his knowledge with the world......thus....................... the google was born!!!!
6. Think what would have happened if Rajani would have born 150 years ago..????? british would have fought for independance....
7. Best Rajani joke!!!!!!---even ghajini remembers rajani!!!!
8. Why do earthquakes occurs????? because at that time Rajanikanth's mobile is on vibration mode!!!!!!!!!
9. Once Rajanikanth bunked a whole day in school.....! since then that day is known as...........................sunday!!!!!!!!!!!!!
10. Breaking news: isro does not exists anymore.....!! Rajanikanth purchased all the rockets for diwali celebration!!!!!!!!!!!!!!!!!!!!!!!
11. Why did Rajani buy an acre of land wth 4 wells on each corner?????...................... to play carrom!!!!!!
12. Before Tom cruise, Rajani was approached for the movie mission impossible, but rajani refused as he found the title insulting..

The pyramids in egypt are actually......................................Rajanikanths primary school craft projects!!!!!!!!!!!!

UNIX : The difference between [ ... ] and [[ ... ]] (The extended test operator)

The [[...]] is processed as part of the shell grammar whereas [...] is processed like any other command.
Operators and operands are detected when the command is read, not after expansions are performed. 

1. The shell does not do word splitting or path-name generation inside [[...]].This allows patterns to be specified for 
   string matching purposes.
   
2. Parameter expansion and command substitution is allowed.
3. Prevents many logic errors in scripts. e.g [ "$x" = "TEST" ] can be written as [[ $x = "TEST" ]] the variables don't need to be quoted.
4. The &&, ||, <, and > operators work within a [[ ]] test, despite giving an error within a [ ] construct.