I would like to add a printer at system startup if one is not present.

I created /etc/rc.d/rc.local and made the file executable

if [ ! -f "/etc/cups/ppd/Officejet-6700.ppd" ]; then
  /sbin/lpadmin -p Officejet-6700 -o printer-is-shared=false -L "Office" -E -v hp:/net/Officejet_6700?ip=172.16.0.2 -m lsb/usr/HP/hp-officejet_6700.ppd.gz -d Officejet-6700
  touch /root/createdprinter.txt
else
  touch /root/printerexists.txt
fi

After boot I get the file /root/createdprinter.txt but no printer was created. if the printer exists before I reboot I get /root/printerexists.txt so I know the startup script runs properly. I run the exact lpadmin command as the script in root terminal and works fine.

Why does that command not want to work in a startup script?  Is the boot environment different?

--Thanks