STINNER Victor <[email protected]> added the comment:
> check2 = os.popen('grep "net\.ipv4\.ip_forward" /etc/sysctl.conf
> /etc/sysctl.d/*').read()
Such code leaks a zombi process when the child process completes, because the
parent never reads its exit status :-(
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<https://bugs.python.org/issue42641>
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