It is a simple solution but it would be even simpler if you avoided the un-necessary chomp and assignment to $line, and used an unless statement modifier. I don't know if it is safe to assume that every record begins with an "@" symbol.

while ( <DATA> )
{
    print unless m{^\@};
}

[download]

I hope this is of interest.

Cheers,

JohnGG

In reply to Re^2: Getting Lines 2,3, and 4 from FASTQ file's Chunk by johngg
in thread Getting Lines 2,3, and 4 from FASTQ file's Chunk by neversaint

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