source: gutenbach/debian/rm/revert_printcap @ 9a301c8

#!/bin/sh -e

echo "Reverting changes to /etc/printcap..." >&2

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

    mv /etc/printcap /etc/printcap.bak
    touch /etc/printcap
    foundprinter="false"
    while read line; do
        printername=$(echo "$line" | grep ^`echo $printername`$ || true)
        if [ -n "$printername" ]; then
            foundprinter="true"
        else
            if [ "$foundprinter"="true" ]; then
                configline=$(echo "$line" | grep ^[[:space:]]*: || true)
                if [ -z "$configline" ]; then
                    foundprinter="false"
                    echo "$line" >> /etc/printcap
                fi
            else
                echo "$line" >> /etc/printcap
            fi
        fi
    done < /etc/printcap.bak
    rm /etc/printcap.bak
else
    echo "Error: /usr/lib/gutenbach/config/printername does not exist!" >&2
fi