Smartphone displays : Retina Display

The retina display has 326 dpi resolution.It has sharp and slick screens around.When kept at a distance of 10-12 inch human eye can distinguish only upto 300 dpi.The retina desplay is used in iPhone4.The iPhone 4 screen provides 326 pixels.This has good resolution of 960x640 packed in 3.5 inch screen.These pixels are squeezed between two glossy aluminium nosilicate glass which is used in helicopter and high speed train wind-shields.

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Pokemon Go download link

Pokemon go has become the buzz word in tech industry now. Nintendo, the Japanese video game company are the creates of this game. Its first of it kind to integrate a game with augmented reality , so people has to go out to real world with there android or iPhone to catch em all . You can download Pokemon go from this link.

Primitive datatypes in hive

String data types STRING VARCHAR CHAR TINYINT SMALLINT INT BIGINT FLOAT DOUBLE DECIMAL BOOLEAN TIMESTAMP DATE

UNIX : How to ignore lines with certain names

Sometimes we need to ignore multiple lines with certain words and get the list out of the file. usually it will be a log file to read . The below grep command can be used to ignore multiple words present in a text file. Lets say the file contain $ cat list.txt apple orange apple banana papaya Now we need to ignore line with orange , banana and papaya . So we can use the below grep command. $ cat list.txt | grep -Ev "orange|banana|papaya" apple apple It will ignore lines with the words in -v part of grep.

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