get-recovery.conf

#!/bin/bash

conffile="recovery.conf"
location="${HOME}/Downloads/"

mkdir -p ${location}

echo "Getting a new ${conffile} file ..."

curl -s https://dl.google.com/dl/edgedl/chromeos/recovery/${conffile} -o /tmp/${conffile}

if [ -s ${location}/${conffile} ]; then
    cp ${location}/${conffile} ${location}/${conffile}.old
fi

cp /tmp/${conffile} ${location}

exit 0

Ensured directory $location exists.