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Is it possible to do something like this in bash?
output=$(echo hello; sleep 10) &
pid=$!
# run some more commands
wait $pid
echo $output
I would like to run multiple commands in parallel, capturing their output. I’d like to do it in a “clean” way – not writing to temporary files etc.
You can use a named pipe to communicate between parent and child, see man mkfifo for details. Parent can use read command to fetch data from the pipe.