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Full Discussion: Split command
Top Forums UNIX for Dummies Questions & Answers Split command Post 302780091 by Don Cragun on Wednesday 13th of March 2013 09:35:45 PM
Old 03-13-2013
Quote:
Originally Posted by siya@
Hi,
Sorry for the confusion!!

I want to basically convert ONLY the first column of my entire sequence
from

PH01000000G0240 to string0G0240
PH01000001G0190 to string1G0190
PH01000002G0120 to string2G0120

,....
....

PH01270000G0010 to string270000G0010
PH01278028G0014 to string278028G0014
PH012781040010 to string278104G0010


With respect to code,why does it have {0,4 }in initial part?

I dint understand the part in code : awk 'match($1, /^PH010{0,4}/)
Please do advise.
ThanksSmilie
Apparently my script didn't work for you. That is because you won't describe in English the transformation that is to be performed. I explained in my last post what the script I gave you would do. And, it made all of the transformations your 5 examples showed.

But, it will not insert the G shown in red in your new example. That G did not appear at all in the 1st string whether or not we would break it into an initial 10 character field and a 2nd field with the remaining characters, or left it as a single field.

PLEASE explain in English what you are trying to do instead of giving a small set of inconsistent examples!
 

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English(3pm)						 Perl Programmers Reference Guide					      English(3pm)

NAME
English - use nice English (or awk) names for ugly punctuation variables SYNOPSIS
use English; use English qw( -no_match_vars ) ; # Avoids regex performance penalty # in perl 5.16 and earlier ... if ($ERRNO =~ /denied/) { ... } DESCRIPTION
This module provides aliases for the built-in variables whose names no one seems to like to read. Variables with side-effects which get triggered just by accessing them (like $0) will still be affected. For those variables that have an awk version, both long and short English alternatives are provided. For example, the $/ variable can be referred to either $RS or $INPUT_RECORD_SEPARATOR if you are using the English module. See perlvar for a complete list of these. PERFORMANCE
NOTE: This was fixed in perl 5.20. Mentioning these three variables no longer makes a speed difference. This section still applies if your code is to run on perl 5.18 or earlier. This module can provoke sizeable inefficiencies for regular expressions, due to unfortunate implementation details. If performance matters in your application and you don't need $PREMATCH, $MATCH, or $POSTMATCH, try doing use English qw( -no_match_vars ) ; . It is especially important to do this in modules to avoid penalizing all applications which use them. perl v5.18.2 2014-01-06 English(3pm)
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