Creating the rcS script
The second main bootscript is the rcS script. Create a
new file /etc/init.d/rcS containing the following:
cat > rcS << "EOF"
#!/bin/sh
# Begin /etc/init.d/rcS
#
# See the rc script for the extensive comments on the constructions
# used here
#
runlevel=S
prevlevel=N
umask 022
export runlevel prevlevel
trap ":" INT QUIT TSTP
#
# Collect all the S scripts in /etc/rcS.d and execute them in the same
#
for i in /etc/rcS.d/S??*
do
[ ! -f "$i" ] && continue;
$i start
done
# End /etc/init.d/rcS
EOF