Remove a line from Really Awesome New Cisco Config Differ (RANCID)

gistfile1.sh

function removecpe {
    if [ $# -ne 1 ]; then
        echo "$0 ip"
        exit 1
    fi

    if [[ $(id -un) != rancid ]]; then
        echo "Must be rancid user to run this script"
        exit 1
    fi

    ip=$1

    if `grep -q $ip router.db`
        then
            date=$(date +%Y%m%d)
            cp /usr/local/var/rancid/rancid-cpe/router.db /usr/local/var/rancid/rancid-cpe/router.db.$date

            removedline=`sed -n "/^$ip:/p" /usr/local/var/rancid/rancid-cpe/router.db | sed -e "s/:cisco:up://"`

            sed -e "/^$ip:/d" /usr/local/var/rancid/rancid-cpe/router.db.$date > /usr/local/var/rancid/rancid-cpe/router.db

            echo "$removedline solgt til stanglakrids."
            exit 0
        else
            echo "IP-adressen $ip ikke fundet"
            exit 1
    fi
}