Search for string and print top and bottom line


 
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# 1  
Old 09-13-2011
Search for string and print top and bottom line

Hi Folks

I need a one liner to parse through a log and if the string is found print the line above, the line with the string and the line below.

example:

The ball is green and blue
Billy through the ball higer.
Jane got hurt with the ball.

So if I search for Billy I would need the 3 lines above printed.

Thanks
# 2  
Old 09-13-2011
Code:
grep -A1 -B1 'Billy' file

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