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# apt install inetutils-inetd
# cat /etc/inetd.conf
... www stream tcp nowait root /usr/local/sbin/webd webd #www stream tcp nowait user1 /usr/local/sbin/webd webd #www stream tcp nowait root /usr/sbin/chroot chroot /var/www/ /sbin/webd
# service inetutils-inetd restart
# service inetd start