A question on comnmands

So...I see a lot of examples using things like this from [Snapshot and Restore][1]:

PUT /_snapshot/my_backup
  "type": "fs",
  "settings": {
        ... repository specific settings ...

And my question is...how are people putting things like this in? They just telneting to port 9200 on localhost and putting them in manually? Or creating a file on the server in the html dir and accessing it? Would love to know..I need to make a snapshot before I do my upgrade. Thank you.
[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-snapshots.html

Are you asking how people make these HTTP requests? Most people probably use curl. Among Windows users I imagine that Fiddler is a common choice. If you're specifically asking about snapshot creation I believe Curator is capable of that nowadays.

Thanks Magnus..that's helpful.

That specific syntax is used in the Sense tool which comes as part of Marvel (https://www.elastic.co/products/marvel)

Thank you Colin.