Hello Vkhaw, and welcome to the Monastery!

For each line in the output file, you are running a series of substitutions. For example, for this line:

WL0,BL10,1708

[download]

you run:

command line = 'perl -pi.bak -e s/WL0,BL1/WL0,BL1,1708/g; CombineDie1D
+ie2.txt'

[download]

and later

command line = 'perl -pi.bak -e s/WL0,BL10/WL0,BL10,1708/g; CombineDie
+1Die2.txt'

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and you expect the second substitution to be applied to the line. But the first substitution finds a match, and so replaces it:

  WL0,BL10,1708
  *******
s/WL0,BL1/WL0,BL1,1708/g

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(The match is marked by asterisks.) This results in:

  WL0,BL1,17080,1708

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and the second match (the one you want) is never applied.

One way to fix this problem would be to re-order the matches so that the longer matches occur first. Another way would be to add a look-ahead assertion to match a comma:

s/WL0,BL1(?=,)/WL0,BL1,1708/g;

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Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Unknown numbers show up by Athanasius
in thread Unknow number show up by Vkhaw

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