dash) on Ubuntu (lucid) and the manpage has this to say about
-e errexit If not interactive, exit immediately if any untested command fails. The exit status of a command is considered to be explicitly tested if the command is used to control an if, elif, while, or until; or if the command is the left hand operand of an “&&” or “||” opera‐ tor.
What happens when a background command fails? And does
bash behave differently in this respect?