* Keep commits discrete. Avoid including multiple unrelated changes in a single commit.
* Keep commits self-contained. Avoid spreading a single change across multiple commits. A single commit should make sense in isolation.

### Testing changes

After making changes, you can test your code in 2 ways:

1. Run tests.

        }
    }

    private static boolean isWindows() {
        return System.getProperty("os.name").toLowerCase().contains("windows");
    }

    private static boolean isMacOS() {
        return System.getProperty("os.name").toLowerCase().contains("mac");
    }

    private static class ExecResult {
        private final String[] args;
        private final int code;