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busybox
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137864f559e7eff1f929958d3999359c7070ed91
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shell
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ash_test
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ash-misc
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wait6.tests
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# In bash, "wait $!" extracts correct exitcode even if bg task has already exited
# It prints 0, then 3:
(
sleep
0
;
exit
3
)
&
sleep
1
echo $
?
wait $
!
echo $
?