Muday time course: Check first sequences in renamed fastq VS. what is in SRA

To ensure that the sequences are matching what we have versus what the SRA has, I came up with a simple check. We look for the first 10 sequences of a given SRA run across all the sequence files.

For speed, I head the fastq.gz file to get only the first 5 sequences.
Use zcat to keep files zipped.
Grep for the sequence of interest.

for f in *gz; do echo $f; zcat < $f | head -n 20 | grep "^CTGGCTTTTC" ; done

Probability dictates that we should find just 1 result.