Hi,
#!/usr/bin/perl -w
use strict;
my $delimiter = ';';
my $nth = 3;
my $regex = '^(' . ".*$delimiter"x$nth . ')';

while (<DATA>) {
  s/$regex/$1$delimiter/ && print;
}

__DATA__
col1;col2;col3;col4
aaa;bbb;ccc;ddd
AAA;BBB;CCC;DDD

[download]

Output is then: 
col1;col2;col3;;col4
aaa;bbb;ccc;;ddd
AAA;BBB;CCC;;DDD

[download]
Regards,
svenXY

In reply to Re: Replacing nth occurrence of string by svenXY
in thread Replacing nth occurrence of string by loris

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