Rclone config "Permission denied"

Hello!

I am trying to run rclone on a WD My Passport Wireless. I followed these steps:

curl -O https://beta.rclone.org/rclone-beta-latest-linux-arm.zip
unzip rclone-current-linux-arm.zip
cd rclone-*-linux-arm
cp rclone /usr/sbin/
chown root:root /usr/sbin/rclone
chmod 755 /usr/sbin/rclone
mkdir -p /usr/local/share/man/man1
sudo cp rclone.1 /usr/local/share/man/man1/
sudo mandb

When I try to run “sudo mandb” I get the error: “sudo: mandb: command not found”
If I run “rclone config” it appears: “-sh: rclone: Permission denied”
How can I solve that?

Regards!