kill-all-zombie-parents

/bin/sh
set -euf -o pipefail

##
# Kill all zombie processes' parents.
#
# To clean up a zombie process, it must be waited on by its parent.
# Killing the parent should work to eliminate the zombie.
#
# After the parent dies, the zombie will be inherited by init,
# which will wait on it and clear its entry in the process table.
#
# If you have a daemon that is spwaning children that become zombies,
# then the daemon has a bug: a daemon should notice when its children die
# and wait on them to determine their exit status.
#
# Credits:
#
*   * http://stackoverflow.com/questions/16944886/how-to-kill-zombie-process
#   * [William Pursell](http://stackoverflow.com/users/140750/william-pursell)
#   * [Krisha Murti](http://stackoverflow.com/users/2841009/krishna-murti)
#
# Contact: Joel Parker Henderson (joel@joelparkerhenderson.com)
# License: GPL
# Updated: 2015-06-02
##

kill -HUP $(ps -A -ostat,ppid | awk '/[zZ]/{print $2}')