The submission begins with these examples:

    for f in *.txt; do
      wc -l "$f"
    done
   
      Or this?
   
    find . -name '*.sh' -exec wc -l {} +
   
      Or maybe you pipe into xargs and pray your filenames don't have spaces:
   
    find . -name '*.log' | xargs rm

Is that "software engineering"

Looks more like "system administration"