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Grep in a file for a particular pattern in a particular position witihn the file

 
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# 8  
Old 03-26-2010
sorry - fat fingers:
Code:
nawk '{f=(substr($0,s,l);if (f !=file){close(file);file=f}}{print $0 > file}' s=487 l=2 myInputfile > myOutputFile

# 9  
Old 03-27-2010
@vgersh99: thank you very much for your postings, I really appreciate that! Smilie
I would like to try it right now, but I am not the office.

Can you tell me if and where there is a variable to replace by the pattern I am searching at position 487-488?

Where can I learn awk, nawk and sed best? Do you have some good PDF-Files? I don't want to bore the forum users with my never ending questions.

Thanks again Smilie
# 10  
Old 03-29-2010
I just tried the command

Code:
nawk '{f=(substr($0,s,l);if (f !=file){close(file);file=f}}{print $0 > file}' s=487 l=2 test_dss > myOutputFile

but I got an error message again

Code:
 
Syntax Error The source line is 1.
 The error context is
                 >>> {f=(substr($0,s,l); <<<
 awk: 0602-502 The statement cannot be correctly parsed. The source line is 1.
 Syntax Error The source line is 1.
        awk: 0602-540 There is a missing ) character.

Is it because of nawk instead of awk?
oslevel returns "5.3.0.0" on the server I am working on
 
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