cURL Command Issue

Hi Team,
I am learning integration with trailhead the module is Apex Web Services and Installed Cygwin tool. I gave the command into that tool like

curl -v https://login.salesforce.com/services/oauth2/token -d "grant_type=password" -d "client_id=3MVG9YDQS5WtC11pyiouaZJOzMvd.Yvyx3tOb0pQguC0I7Hk6dJnfIO3DNvTFVJKjGycRZPCrQ2XKV0HbMWOS" -d "client_secret=3154661474188934965" -d "username=myusername" -d "password=mypwdCuyKLgVOI6Hf9IUJ2W1J0t2lX" -H 'X-PrettyPrint:1'
but getting error like command not found.Please anyone suggest me where i am missing.please find the below image for reference.
Thanks in advance...
User-added image