mjhjmtu

I have created the following file in /etc/init.d

#! /bin/sh
# /etc/init.d/ndppd

# Carry out specific functions when asked to by the system
case "$1" in
 start)
 ndppd -d
 ;;
 *)
 echo "Usage: /etc/init.d/ndppd start"
 exit 1
 ;;
esac

exit 0

I then executed chmod +x /etc/init.d/ndppd

I want ndppd to run at startup, so I ran update-rc.d ndppd defaults

but when I run update-rc.d ndppd defaults

I get no output

Why is that? what is the proper way to make my init.d script to run the "start" section at boot?

You need a symlink in /etc/rc3.d to this file. The name needs to start with capital S and by convention then has 2 digits and a name like nppd.

The files are sorted by name, so the 2 digits effectively give the order.

In order to be able to use update-rc you need some magic comments in the file.

# Provides: ndppd
# Required-Start: $local_fs $remote_fs
# Required-Stop: $local_fs $remote_fs
# Should-Start: $syslog
# Should-Stop: $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start or stop the inetd daemon.
### END INIT INFO

Should be at the beginning of the file write after #!/bin/sh -e