auth ping curl -H 'Authorization: Token 24fd3c026886e3121b2ca630805ed425c272cb96' https://cloud.seafile.com/api2/auth/ping/ "pong" -H/--header <header> (HTTP) Extra header to use when getting a web page. You may specify any number of extra headers. Note that if you should add a custom header that has the same name as one of the internal ones curl would use, your externally set header will be used instead of the internal one. This allows you to make even trickier stuff than curl would normally do. You should not replace internally set headers without knowing perfectly well what you’re doing. Remove an internal header by giving a replacement without content on the right si