Common UNIX Printing System chown -R :lp /etc/cups [ ! -e /var/cache/cups ] || chown -R :lp /var/cache/cups [ ! -e /var/cache/cups/help.index ] || chown lp /var/cache/cups/help.index [ ! -e /var/cache/cups/ppds.dat ] || chown lp /var/cache/cups/ppds.dat [ ! -e /var/spool/cups ] || chown -R :lp /var/spool/cups