I am trying to modify my file by using Regex to replcace/substitute strings/numbers:

Example fie:

>Sample_1_x80

AGGGGGGGGGTTCCC

>Sample_2_x85

TTTCCCGGGAAAA

>sample_3_x112

GGCCCCTTTGAGG

And I want to modify it to print like so(ID line should be tab-delimited):

>ID1 80

AGGGGGGGGGTTCCC

>ID2 85

TTTCCCGGGAAAA

and so on ....

My best effort:

#!usr/bin/perl
$file;
@files;
$filename;

$filename = <STDIN>;
open(FILENAME, "<$filename") or die "can't open file";

while($file = <FILENAME>){
    
    chomp $file;
    $file =~ s/sample\_\d\_x?/ID\t/;
    
    print $file, "\n";
    
}

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In reply to modifying a file with regex! by rna_follower

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