I'm completely foreign to what I'm trying to do. I purchased a 3TB usb hard drive. It is plugged in on a Windows 7 operating system.

I want to copy the files from a Linux server to this hard drive. I have no idea what command to use.

I thought it must be something like:
rsync -avzP /bin/ {location of hard drive}

But I don't know even what the correct path is.

I would appreciate any help with this. Thank you!

Is it even mounted yet? You can find out with If it's not mounted you'll want to look at the /dev directory for the device (hard drives are normally sd? where ? is a letter.) I'm not sure that a usb mounted hard drive will be the same but I'd hope so (may depend on the distribution tho I think that may be a kernel thing.) Actually, it might be easier to just do an which should list all the drives and partitions the system sees.

Anyhow, you'll want to mount the usb drive using something like /mnt/tmp is just a directory you create and /dev/sdb1 is the drive and partition to mount.

If it is not automounted, you can check dmesg for which device it is recognized as. In example /dev/sdc. The partition would then be /dev/sdc1

you have to make the drive Shared in Windows and then on your Linux machine with samba connect to that shared drive on windows machine

then you probably could copy the files if the shared is mounted (travisdh1 post)

Also check out WinSCP if you don't mind doing the copying from the Windows box.