Please run modified scripts through shellcheck before making a pull request.
Like spell checkers, code linters aren't always right, but neither are we.
You can also test modified scripts through time to see how runtime is affected by changes.
# Good: echo 1 | cut -d ' ' -f 2 -s
# Bad: echo 1 | cut -d ' ' -f 2
git grep -E 'cut.*-f ([2-9]|[1-9][0-9]+)' | grep -Ev '\-s|^CONTRIBUTING.md:'