Eduard Bloch:
that was the best guess I could extract from the documentation
Try some StackExchange answers. * https://unix.stackexchange.com/a/477049/5132 * https://unix.stackexchange.com/a/427917/5132 * https://unix.stackexchange.com/a/423648/5132 * https://unix.stackexchange.com/a/441831/5132 * https://unix.stackexchange.com/a/500687/5132