aanbb:anhn:iuopl:12345 chr1 12345 asnmkol * # kjiiii.....anmkij:lpolk:lopll:abnnj chr5 123222 polko * dddfgg ....

aaanbb:anhn:iuopl:aanjuj chr2 44345 asnmkol * # kjiiii.....anmkij:lpolk:lopll:abnnj chr7 567222 polko * dddfgg .

##</code><code>##

use strict;
use warnings;
open (my $fhConditions, "<1.txt"); 
my $l=6;
open (my $read, "<2.txt");
my @e = <$read>;
my $d = join('', @e );
$d =~ s/\s+//g;
while (my $line = <$fhConditions>) {
chomp $line;
my @pos = $line[$i] =~/chr*\s+(.+?)\s/g;
if($pos[0] =/[0-9]/)
{
my $match = substr($d,$pos[0],$l)
print "$line" if $match =~m/AAGCTT/;
}
if($pos[1] =/[0-9]/)
{
my $a = $pos[0]-$l;
my $match = substr($d,$a,$l);
print "$line" if $match =~m/AAGCTT/;
}
}

##</code><code>##

Global symbol "@line" requires explicit package name at restriction.pl line 11.
Global symbol "$i" requires explicit package name at restriction.pl line 11.
syntax error at restriction.pl line 15, near ")
print"
Global symbol "$match" requires explicit package name at restriction.pl line 15.