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Full Discussion: Can't figure out how to find specific characters in specific columns
Top Forums Shell Programming and Scripting Can't figure out how to find specific characters in specific columns Post 302733769 by RudiC on Wednesday 21st of November 2012 04:02:12 AM
Old 11-21-2012
Quote:
Originally Posted by elixir_sinari
The OP has mentioned that he/she needs to check the 4 characters in a line/record starting at the 265th column. 265th column will never be the 265th field for awk (in case of splitting on white-space(spaces and/or tabs)).
Correct. But there may be non POSIX compatible extensions, like in e.g. mawk,
Quote:
If FS = "", then mawk breaks the record into individual characters,
Still you would need to phrase the condition like $265$266$267$268=="9999". Might be worth a shot.
 

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ppmtopgm(1)						      General Commands Manual						       ppmtopgm(1)

NAME

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DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
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								   10 April 2000						       ppmtopgm(1)
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