Cannot authorize status 401

I'm trying to get a list of folders but I keep hitting the same error: 

* Curl_http_done: called premature == 0
* Connection #0 to host api.box.com left intact
{"type":"error","status":401,"code":"unauthorized","help_url":"http:\/\/developers.box.com\/docs\/#errors","message":"Unauthorized - Cannot authorize with this service","request_id":"***number removed for privacy***059ce72a2dda8d"}%

I just use the following in the terminal:

curl -v https://api.box.com/2.0/folders/0 -H \
"Authorization: Bearer {token}"

Thanks!