Once upon a time Michael Naumann said...
>
> >>I want my bash to obey eof (^D) only if there are no jobs in the background.
You can do it with the variable PROMPT_COMMAND. Its value is executed
prior to each prompt.
eg.
function job_test {
if [ -z "$(jobs)" ] ; then
set +o ignoreeof
else
set -o ignoreeof
fi
}
PROMPT_COMMAND=job_test
This works with one slight glitch. The order of operations seems to be
1) run PROMPT_COMMAND
2) bash checks for completed jobs
3) print the prompt
This means on the first prompt after the last job exits, the job_test
function still sees the job and sets ignoreeof. On the next prompt (ie.
just press enter, or ^D), it will exit correctly.
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