Update crontab for everyone using iNotify

This piece of code would update the crontab for everyone using the SMB mount app. Problem is that it's not fail proof to get the actual MOUNT_IDs so it's better to do it manually.

source /var/scripts/fetch_lib.sh

# Replace iNotify checker with a script instead
if crontab -u www-data -l | grep -q "files_external:notify -v"
then
    download_script ADDONS notify-crontab
    chmod +x "$SCRIPTS"/notify-crontab.sh
    chown root:root "$SCRIPTS"/notify-crontab.sh
    MOUNT_ID=$(sudo -u postgres psql nextcloud_db -c "select mount_id from oc_external_config")
    crontab -u www-data -l | grep -v "files_external:notify -v" | crontab -u www-data -
    crontab -u root -l | { cat; echo "@reboot $SCRIPTS/notify-crontab.sh $(echo "${MOUNT_ID##*  }" | head -1)"; } | crontab -u root -
    print_text_in_color "$ICyan" "Replaced  iNotify with a script instead of command."
fi

Start by locating the SMB mount update logic that sources /var/scripts/fetch_lib.sh and handles notify-crontab.sh. Check how the MOUNT_ID is obtained and how crontab entries are changed for www-data and root. Done means the iNotify command is replaced reliably without depending on an automatic, potentially incorrect MOUNT_ID.