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Scripting a DNA Sequence Viewer

SANITY WARNING: Please don’t read this article unless you’re a compulsive shell scripter, like me. Seriously. There are some excellent FOSS sequence viewers in the distro repositories, with great GUIs and lots of features. Why would you want to build a less capable viewer that only works in a terminal? Still with me? OK, the script explained here is called ‘DNA’ and relies on up-to-date GNU utilities (e.g. GNU AWK) and BASH…