What causes insserv: warning: script 'XXX.sh' missing LSB tags and overrides, and how is it prevented?pi@raspberrypi /etc/init.d $ sudo rm 5_*pi@raspberrypi /etc/init.d $ sudo vi /etc/init.d/5_second_cronpi@raspberrypi /etc/init.d $ sudo chmod +x /etc/init.d/5_second_cronpi@raspberrypi /etc/init.d $ sudo update-rc.d /etc/init.d/5_second_cron defaults^Cpi@raspberrypi /etc/init.d $5_second_cron.sh is the following:#!/bin/bashwhile truedo /usr/bin/php /var/www/cron.php sleep 5doneEDIT.  Tried the following.  Script just hung when I executed $ sudo update-rc.d /etc/init.d/5_second_cron.pi@raspberrypi /etc/init.d $ sudo vi /etc/init.d/5_second_cronpi@raspberrypi /etc/init.d $ sudo chmod +x /etc/init.d/5_second_cronpi@raspberrypi /etc/init.d $ sudo update-rc.d /etc/init.d/5_second_cron defaults^.Cpi@raspberrypi /etc/init.d $5_second_cron is the following:#!/bin/bash# /etc/init.d/5_second_cron### BEGIN INIT INFO# Provides:          5_second_cron# Required-Start:    $remote_fs $syslog# Required-Stop:     $remote_fs $syslog# Default-Start:     2 3 4 5# Default-Stop:      0 1 6# Short-Description: PHP Loop# Description:       Initiate a given PHP file every 5 seconds### END INIT INFOwhile truedo /usr/bin/php /var/www/cron.php sleep 5doneexit 0EDIT2.  Messing around some more, and now this:pi@raspberrypi /etc/init.d $ sudo update-rc.d /etc/init.d/5_second_cron defaultsupdate-rc.d: using dependency based boot sequencingupdate-rc.d: error: unable to read /etc/init.d//etc/init.d/5_second_cron
insserv: warning: script 'XXX.sh' missing LSB tags and overrides
init.d