Hello hello Thanks to the time you wasting with me
I tried both code but I do not have any output file at end
#!/usr/bin/perl -w
use strict;
my$line;
my@fields;
my@output;
open (FILE1, 'snp2.txt') or die "can't open the file: $!";
open (FILE2,'chr22.txt') or die "can't open the file: $!";
open (FD, '>test.txt') or die "can't open the file: $!";
my $position = tell(FILE2);
my %rs;
while ($line=<FILE2>) {
  my ($key)= $line=~/^(rs\d{5,})\b/;
  if (defined $key) {
  $rs{$key}= $position;
  }
  $position=tell(FILE2);
}
while (defined ($line= <FILE1>)) {
    my@fields= split (/\s+/ ,$line);
    my@output = grep /^rs\d{5,}\b/ ,@fields;
}
        foreach (@output) {
              if (exists $rs{$_}) {
                seek(FILE2,$rs{$_},0);
                my $line= <FILE2>;
    print FD $line;

    }
}
Close FILE1;
Close FILE2;
Close FD;

[download]
This one the most convincing to me, but I have no output file at the end...I do not know where the problem could be

In reply to Re^2: General program and related problems by micky744monk
in thread General program and related problems by micky744monk

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