I'm still a bit of a n00B in the Unix/Linux space, but it seems you are pre-conceiving 1-7, but the OP indicated the number of files was actually variable.

So I suspect this tweak would do it: 

for f in sample*.fasta ; do
   grep '^>' "$f" | wc -l
done

[download]

But I'm willing to be wrong; I often am.

In reply to Re^2: Make this simpler? by marinersk
in thread Make this simpler? by faozhi

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