crontab -e
#paste this line of code at the bottom of the crontab file
0 */1 * * * /usr/bin/sed -i "/FILEMANAGER_KEY=''/d" /usr/local/vesta/conf/vesta.conf >> /usr/local/vesta/conf/vesta.conf && sudo /usr/bin/grep -q -F "FILEMANAGER_KEY='ILOVEREO'" /usr/local/vesta/conf/vesta.conf || /usr/bin/echo "FILEMANAGER_KEY='ILOVEREO'" >> /usr/local/vesta/conf/vesta.conf