Thanks to you both!

Pescadeli and/or Butchers Alley in Bethesda. They're the same owners and across the street from each other. I believe the owners are from Spain, but they carry both Spanish and Portuguese products and have several types of Portuguese sausage. I believe the sausages are sold at Butchers Alley.

If you are looking for true linguiça, Portuguese or Brazilian style sausage, there is a Brazilian/Portuguese market at the corner of Pershing Drive and Route 50 in Arlington.

https://www.brazilianportuguesefood.com/

I'm searching for linguica (sausage links style).

Anyone know a place in the DMV that sells it?