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#!/bin/bashexport PATH=/usr/local/sbin:$PATHecho "Starting backup disk"/usr/local/bin/startbackupdiskretval=$?if [ "$retval" != "0" ] ; then        echo "Could not start backup disk: error code" $retval        exit 1fiecho "Expiring old backups"nice /usr/local/sbin/dirvish-expireretval=$?if [ "$retval" != "0" ] ; then        echo "Expiration failed: error code" $retval        /usr/local/bin/stopbackupdisk        retval=$?        if [ "$retval" != "0" ] ; then                echo "Could not stop backup disk: error code" $retval        fi        exit 1fiecho "Backing up"nice /usr/local/sbin/dirvish-runallretval=$?if [ "$retval" != "0" ] ; then        echo "Backup failed: error code" $retval        /usr/local/bin/stopbackupdisk        retval=$?        if [ "$retval" != "0" ] ; then                echo "Could not stop backup disk: error code" $retval        fi        exit 1fiecho "Stopping backup disk"/usr/local/bin/stopbackupdiskretval=$?if [ "$retval" != "0" ] ; then        echo "Could not stop backup disk: error code" $retval        exit 1fi