### Test mutex. This should not mix output
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done
### Test semaphore 2 jobs running simultaneously
job1a 1
job2a 2
job1b 3
job3a 4
job2b 5
job3b 6
done
### Test if parallel invoked as sem will run parallel --semaphore
job1a 1
job2a 2
job1b 3
job3a 4
job2b 5
job3b 6
done
### Test similar example as from man page - run 2 jobs simultaneously
Expect done: 1 2 5 3 4
Scheduling 5
starting 5
Scheduling 1
starting 1
Scheduling 2
done 1
starting 2
Scheduling 3
done 2
starting 3
Scheduling 4
done 5
starting 4
done 3
done 4
### Test --fg followed by --bg
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### Test bug #33621: --bg -p should give an error message
parallel: Error: Jobs running in the background cannot be interactive.