source: server/inst/edit-printcap @ 30beeab

#!/bin/sh -e

echo "Editing /etc/printcap..." >&2
if [ ! -e /etc/printcap ]; then
    touch /etc/printcap
fi

if [ ! -e /etc/lprng/printcap ]; then
    ln -s /etc/printcap /etc/lprng/printcap
fi

if [ -e /usr/lib/gutenbach/config/printername ]; then
    printername=$(cat /usr/lib/gutenbach/config/printername)

    printcap=$(cat /etc/printcap | grep ^`echo $printername` || true)
    if [ ! -n "$printcap" ]; then
    # add the appropriate entry into /etc/printcap, /etc/lprng/printcap
        echo "$printername" >> /etc/printcap
        echo "  :server" >> /etc/printcap
        echo "  :cm=Gutenbach Music Spooler" >> /etc/printcap
        echo "  :lp=/dev/null" >> /etc/printcap
        echo "  :if=|/usr/lib/gutenbach/gutenbach-filter" >> /etc/printcap
        echo "  :lf=/var/spool/lpd/$printername/log" >> /etc/printcap
        echo "  :sd=/var/spool/lpd/$printername" >> /etc/printcap
        echo "  :ml=0:mx=0:sh" >> /etc/printcap
        echo "  :create_files" >> /etc/printcap
        echo "  :auth_forward=kerberos5" >> /etc/printcap
        echo "  :use_auth=kerberos5" >> /etc/printcap
        echo "  :kerberos_id=daemon/"`hostname`".mit.edu@ATHENA.MIT.EDU" >> /etc/printcap
        echo "  :kerberos_keytab=/etc/daemon.keytab" >> /etc/printcap
    fi
else
    echo "Error: /usr/lib/gutenbach/config/printername does not exist!" >&2
    exit 1
fi