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Top Forums Shell Programming and Scripting Concatenating the lines with different pattern Post 302374232 by durden_tyler on Monday 23rd of November 2009 10:55:35 PM
Old 11-23-2009
Given these conditions, I think your data should have a record separator (a "pair-separator" if you will). If you have this, for example:

Code:
SH1,QC,12334
RD1,MO,898909,35476

then it could mean -
(a) the RD1 record corresponds to the SH1 record, or
(b) the SH1 record is missing its corresponding RD1 record and the RD1 record is missing its corresponding SH1 record as well.

And each of these assumptions yield different outputs.

This ambiguity could've been removed had there been a record separator/pair-separator.

tyler_durden
 

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