Hi, I have script like below: 

#!/usr/local/bin/perl

use strict;
use warnings;

while (<DATA>) {

  ( my ($s_id) = /^\d+\|(\d+?)\|/ ) ;

  if ( $s_id == 1 ){

    s/^(.*\|)*.*ABC\.pi=([\d.]+|[\w.]+)*.*ABC\.id=(\d+|[\w.]+).*$/$1$2
+|$3/s;

    print "$1$2|$3\n";

    }
  }


__DATA__
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.66~ABC.id=
+789137136770
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.67~ABC.id=
+789134713670
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.68~ABC.id=
+789137213670
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.69~ABC.id=
+78913713670
123|1|456464|645646|4546|654~abc~dhghga~12.33.44.55.70~3713670
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.70~ABC.id=
+78913713670
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.70~ABC.id=
+78913713670
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.70~ABC.id=
+789137135670
123|1|456464|645646|4546|654~abc~dhghga~ABC.pi=112.33.44.55.70~ABC.id=
+789137153670
123|1|456464|645646|4546|654~abc~dhghga~12.33.44.55.70~3713670
123|1|456464|645646|4546|654~abc~dhghga~121322~456466874~8796896
123|2|456464|645646|4546|654~abc~dhghga~121322~456466874~6788708
123|2|456464|645646|4546|654~abc~dhghga~121322~456466874~6806

[download]
When I am executing I am getting output as follows: 

123|1|456464|645646|4546|112.33.44.55.66|789137136770
123|1|456464|645646|4546|112.33.44.55.67|789134713670
123|1|456464|645646|4546|112.33.44.55.68|789137213670
123|1|456464|645646|4546|112.33.44.55.69|78913713670
Use of uninitialized value $2 in concatenation (.) or string at split_
+test.pl line 14, <DATA> line 5.
Use of uninitialized value $3 in concatenation (.) or string at split_
+test.pl line 14, <DATA> line 5.
1|
123|1|456464|645646|4546|112.33.44.55.70|78913713670
123|1|456464|645646|4546|112.33.44.55.70|78913713670
123|1|456464|645646|4546|112.33.44.55.70|789137135670
123|1|456464|645646|4546|112.33.44.55.70|789137153670

[download]
I am looking to get rid off the error. How can I do it? ANd I want to write the exceptions to new file.

In reply to Print only if pattern matches by brad_nov

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