| echo "Backgrounded pipes shall have their stdin redirected to /dev/null" | |
| # 1. bash does not redirect stdin to /dev/null if it is interactive. | |
| # hush does it always (this is allowed by standards). | |
| # 2. Failure will result in this script hanging | |
| cat & wait; echo Zero:$? | |
| # This does not work for bash! bash bug? | |
| cat | cat & wait; echo Zero:$? | |
| echo Done |