douwei8672 2017-09-19 06:33
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golang exec.Command导致很多失效的进程

I'm using golang to call pppd and then kill it after a while. However I got a lot of defunct proccesses in this way.

This is how I run pppd

exec.Command("sh", "-c", "pppd call vpn").CombinedOutput()

This is how I kill it.

exec.Command("sh", "-c", "pkill pppd").CombinedOutput()

Then I got a lot of this

root     31541 23536  0 10:54 ?        00:00:00 [pppd] <defunct>
root     31929 23356  0 10:55 ?        00:00:00 [pptpgw] <defunct>
root     31933 23356  0 10:55 ?        00:00:00 [pptpcm] <defunct>
root     31940 23356  0 10:55 ?        00:00:00 [pppd] <defunct>
root     31993 23536  0 10:55 ?        00:00:00 [pptpgw] <defunct>
root     31997 23536  0 10:55 ?        00:00:00 [pptpcm] <defunct>
root     31998 23536  0 10:55 ?        00:00:00 [pppd] <defunct>
root     32012 23356  0 10:55 ?        00:00:00 [pptpgw] <defunct>
root     32016 23356  0 10:55 ?        00:00:00 [pptpcm] <defunct>
root     32017 23356  0 10:56 ?        00:00:00 [pppd] <defunct>
root     32070 23536  0 10:56 ?        00:00:00 [pptpgw] <defunct>
root     32074 23536  0 10:56 ?        00:00:00 [pptpcm] <defunct>
root     32075 23536  0 10:56 ?        00:00:00 [pppd] <defunct>
root     32083 23356  0 10:56 ?        00:00:00 [pptpgw] <defunct>
root     32087 23356  0 10:56 ?        00:00:00 [pptpcm] <defunct>
root     32089 23356  0 10:56 ?        00:00:00 [pppd] <defunct>
root     32131 23536  0 10:57 ?        00:00:00 [pptpgw] <defunct>
root     32135 23536  0 10:57 ?        00:00:00 [pptpcm] <defunct>
root     32148 23536  0 10:57 ?        00:00:00 [pppd] <defunct>
root     32160 23356  0 10:57 ?        00:00:00 [pptpgw] <defunct>
root     32164 23356  0 10:57 ?        00:00:00 [pptpcm] <defunct>
root     32165 23356  0 10:57 ?        00:00:00 [pppd] <defunct>
root     32177 23536  0 10:57 ?        00:00:00 [pptpgw] <defunct>
root     32181 23536  0 10:57 ?        00:00:00 [pptpcm] <defunct>

How can I avoid defunct processes.

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