Grep -i
Grep –i Stand for case insensitive. With grep –i you can extract lines that correspond to your search criteria no matter the cases.
Let suppose a file name “name” that contain the name of many people.
Here is what it contain:
File
Dany Moore
Steve Hawkins
Roger Hipkiss
Loy Hinton
Mandy Moore
Candy Diaz
Fernando Diaz
if you do :
you will get :
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cat name | grep –i moore
File
Dany Moore
Mandy Moore
Like you can see , your searching for moore with the 'm' in lowercase and you still get the line that contain moore with the 'M' in uppercase or else like you known linux is case sensitive and if you omit the -i option it will return no line like the following :
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cat name | grep moore
Or you can do :
3
grep –i moore name
And still get the same result!
