/etc/init.d/bootlogs is in initscripts 2.88dsf-41+deb7u1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60  | #!/bin/sh
### BEGIN INIT INFO
# Provides:          bootlogs
# Required-Start:    hostname $local_fs
# Required-Stop:
# Should-Start:      $x-display-manager gdm kdm xdm ldm sdm wdm nodm
# Default-Start:     1 2 3 4 5
# Default-Stop:
# Short-Description: Log file handling to be done during bootup.
# Description:       Various things that don't need to be done particularly
#                    early in the boot, just before getty is run.
### END INIT INFO
PATH=/sbin:/usr/sbin:/bin:/usr/bin
[ "$DELAYLOGIN" ] || DELAYLOGIN=yes
. /lib/init/vars.sh
do_start () {
	# Save kernel messages in /var/log/dmesg
	if which dmesg >/dev/null 2>&1
	then
		[ -f /var/log/dmesg ] && savelog -q -p -c 5 /var/log/dmesg
		dmesg -s 524288 > /var/log/dmesg
		chgrp adm /var/log/dmesg || :
	elif [ -c /dev/klog ]
	then
		[ -f /var/log/dmesg ] && savelog -q -p -c 5 /var/log/dmesg
		dd if=/dev/klog of=/var/log/dmesg &
		sleep 1
		kill $!
		[ -f /var/log/dmesg ] && { chgrp adm /var/log/dmesg || : ; }
	fi
}
do_status () {
	return 0
}
case "$1" in
  start|"")
	do_start
	;;
  restart|reload|force-reload)
	echo "Error: argument '$1' not supported" >&2
	exit 3
	;;
  stop)
	# No-op
	;;
  status)
	do_status
	exit $?
	;;
  *)
	echo "Usage: bootlogs [start|stop|status]" >&2
	exit 3
	;;
esac
:
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