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How to check charactor in certain position?

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# 1  
Old 07-02-2014
How to check charactor in certain position?
Hi Gurus,

I need to check the charactor in certain position.

in my file
Code:
 
abcdef1234gh
ac1234eeeegt
acdead1235gh

I want to check what is check from position 7 to 10's charactor, if it is 1234, then output the whole line. for above file, I want to get below output
Code:
 
abcdef1234gh

thanks in advance.
# 2  
Old 07-02-2014
Code:
awk 'substr($0,7,4)=="1234"' myFile

# 3  
Old 07-02-2014
or Using sed:

Code:
sed -nE '/^.{6}1234/p' infile

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