curl [URL] -d "key1=value1&key2=value2"
curl [URL] -F key1=value1 -F key2=value2 -F key2=@filename
curl [URL] -d "key1=value1&key2=value2"
curl [URL] -F key1=value1 -F key2=value2 -F key2=@filename
curl [URL] -d "key1=value1&key2=value2"
curl [URL] -F key1=value1 -F key2=value2 -F key2=@filename