hw2_solution.md

Part 1

sed -E 's/^>[^A-Z]*([A-Z])[^_]*_([^0-9_]*).*_([0-9]+)_([A-Z]{3})[A-Z]*/>\1._\2_\3_\4/' hw2_data.txt > reformatted.txt

Use regular expressions that are general and use capture groups to reformat your data. For example:

Find: ^>[^A-Z]*([A-Z])[^_]*_([^0-9_]*).*_([0-9]+)_([A-Z]{3})[A-Z]* Replace: >\1._\2_\3_\4

Part 2

grep ">" hw2_data.txt | sed -E 's/^>[^A-Z]*([A-Z])[^_]*_([^0-9_]*).*_([0-9]+)_([A-Z]{3})[A-Z]*/\3:\4/' > reformatted2.txt