Running "ps -e" while netman runs for a some time results in zombies as follows:

edbarx@edbarx-pc:~$ ps -e
  PID TTY          TIME CMD
    1 ?        00:00:00 init
    2 ?        00:00:00 kthreadd
    3 ?        00:00:05 ksoftirqd/0
    5 ?        00:00:00 kworker/0:0H
    7 ?        00:00:12 rcu_sched
    8 ?        00:00:00 rcu_bh
    9 ?        00:00:00 migration/0
   10 ?        00:00:00 watchdog/0
   11 ?        00:00:00 watchdog/1
   12 ?        00:00:00 migration/1
   13 ?        00:00:06 ksoftirqd/1
   15 ?        00:00:00 kworker/1:0H
   16 ?        00:00:00 khelper
   17 ?        00:00:00 kdevtmpfs
   18 ?        00:00:00 netns
   19 ?        00:00:00 khungtaskd
   20 ?        00:00:00 writeback
   21 ?        00:00:00 ksmd
   22 ?        00:00:00 khugepaged
   23 ?        00:00:00 crypto
   24 ?        00:00:00 kintegrityd
   25 ?        00:00:00 bioset
   26 ?        00:00:00 kblockd
   29 ?        00:00:00 kswapd0
   30 ?        00:00:00 fsnotify_mark
   36 ?        00:00:00 kthrotld
   37 ?        00:00:00 ipv6_addrconf
   39 ?        00:00:00 deferwq
   75 ?        00:00:00 khubd
   76 ?        00:00:00 acpi_thermal_pm
   77 ?        00:00:00 ata_sff
   78 ?        00:00:00 scsi_eh_0
   79 ?        00:00:00 scsi_tmf_0
   80 ?        00:00:00 scsi_eh_1
   81 ?        00:00:00 scsi_tmf_1
   85 ?        00:00:00 scsi_eh_2
   86 ?        00:00:00 scsi_tmf_2
   87 ?        00:00:00 scsi_eh_3
   88 ?        00:00:00 scsi_tmf_3
   95 ?        00:00:00 kworker/1:1H
   96 ?        00:00:00 kworker/0:1H
  118 ?        00:00:00 jbd2/sda9-8
  119 ?        00:00:00 ext4-rsv-conver
  309 ?        00:00:00 udevd
  359 ?        00:00:00 hd-audio0
  368 ?        00:00:00 kpsmoused
  389 ?        00:00:00 cfg80211
 1277 ?        00:00:00 rpcbind
 1305 ?        00:00:00 rpc.statd
 1310 ?        00:00:00 rpciod
 1312 ?        00:00:00 nfsiod
 1319 ?        00:00:00 rpc.idmapd
 1555 ?        00:00:00 rsyslogd
 1597 ?        00:00:00 atd
 1643 ?        00:00:00 acpid
 1665 ?        00:00:00 cron
 1726 ?        00:00:00 dbus-daemon
 1919 ?        00:00:05 xchat
 1965 ?        00:00:00 exim4
 1985 ?        00:00:00 slim
 2011 tty7     00:09:19 Xorg
 2012 tty1     00:00:00 getty
 2013 tty2     00:00:00 getty
 2014 tty3     00:00:00 getty
 2015 tty4     00:00:00 getty
 2016 tty5     00:00:00 getty
 2017 tty6     00:00:00 getty
 2030 ?        00:00:00 kauditd
 2032 ?        00:00:00 console-kit-dae
 2099 ?        00:00:00 polkitd
 2110 ?        00:00:00 sh
 2162 ?        00:00:00 ssh-agent
 2165 ?        00:00:00 dbus-launch
 2166 ?        00:00:00 dbus-daemon
 2176 ?        00:00:00 xfce4-session
 2178 ?        00:00:00 xfconfd
 2182 ?        00:00:00 gpg-agent
 2183 ?        00:00:02 xfwm4
 2185 ?        00:00:03 xfce4-panel
 2187 ?        00:00:00 xfsettingsd
 2189 ?        00:00:00 syndaemon
 2191 ?        00:00:00 xfdesktop
 2195 ?        00:00:00 xfce4-power-man
 2199 ?        00:00:01 xscreensaver
 2202 ?        00:00:00 xfce4-power-man
 2203 ?        00:00:00 xfce4-volumed
 2208 ?        00:00:00 upowerd
 2210 ?        00:00:00 panel-6-systray
 2213 ?        00:00:00 panel-2-actions
 2264 ?        00:00:45 netman
 2271 ?        00:00:00 backend <defunct>
 2272 ?        00:00:00 cat <defunct>
 2280 ?        00:00:00 ifup <defunct>
 2416 ?        00:00:00 at-spi-bus-laun
 2743 ?        00:00:00 kworker/1:1
 3809 ?        00:00:00 kworker/0:1
 4106 ?        00:00:00 kworker/u8:0
 4595 ?        00:00:00 kworker/1:0
 4834 ?        00:00:00 kworker/u8:2
 5130 ?        00:00:00 kworker/0:2
 5207 ?        00:00:00 kworker/1:2
 5732 ?        00:00:00 xfce4-terminal
 5736 ?        00:00:00 gnome-pty-helpe
 5737 pts/0    00:00:00 bash
 5755 ?        00:00:00 ps <defunct>
 5756 pts/0    00:00:00 ps
 7389 ?        00:00:00 ifdown <defunct>
16124 ?        00:00:00 ifup <defunct>
16135 ?        00:00:00 wpa_supplicant
16189 ?        00:00:00 dhclient
18393 ?        00:00:28 medit
26622 ?        00:00:00 backend <defunct>
26853 ?        00:00:00 backend <defunct>
26886 ?        00:00:00 backend <defunct>
26908 ?        00:00:00 backend <defunct>
31536 ?        00:08:11 iceweasel

I found this suggestion to get rid of zombies. The link is this:
https://www.daniweb.com/software-development/cpp/threads/364407/handling-sigchld-to-prevent-zombie-processes

What do you suggest?


Edward.