You can write a kernel message by either:
echo "message" > /dev/kmsg
Or by using logger command.
Taken from here.
ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/ /' -e 's/-/|/'Usefull when in certain busybox builds that lack tree.