the file ntfs-3g is located on:
You can verify it with:
and you will get a /usr/local/bin/ntfs-3g
/usr/local/bin/ntfs-3g /dev/disk1s1 /Volumes/ntfs -ovolname="Windows Disk"
I'm using MacPorts so i have a .profile file on my home directory.
Here are my path:
So I can simply use the command "ntfs-3g" without typing the full path.
More info for setting the path: