This works for me 


use strict;

use warnings;

use Data::Dumper;

foreach my $line (<DATA>) { 
    chomp($line);
    $line =~ s/^A$|^B$//;
    if ( $line ) { print "$line\n"; }
}

__DATA__
A
ZZZ
YYY
XXX
B
A
B
A
FFF
SSS
GGG
B
A
B
A
WWW
EEE
TTT
BCC

[download]

In reply to Re: file alteration by crusty_collins
in thread file alteration by artperl

Title:
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