I have just asked a question about forking a process to sleep in the backgroud.
The notation I came up with myself looks like this:
sleep 10 && echo "hello world" &
This answer to a different question uses a different format.
( sleep 10 ; echo "hello world" ) &
I know that
&& only allows the second process to start if the first one returns true. Can sleep fail? Is there a situation where I should prefer one over the other?