curl(1) -sSLIXG
transfer a URL
-s, --silent
       Silent or quiet mode. Don't show progress meter or error messages.  Makes Curl mute.
-S, --show-error
       When used with -s it makes curl show an error message if it fails.
-L, --location
       (HTTP/HTTPS) If the server reports that the requested page  has  moved  to  a  different  location
       (indicated  with  a Location: header and a 3XX response code), this option will make curl redo the
       request on the new place. If used together with -i, --include or  -I,  --head,  headers  from  all
       requested pages will be shown. When authentication is used, curl only sends its credentials to the
       initial host. If a redirect takes curl to a different host, it won't  be  able  to  intercept  the
       user+password.  See  also  --location-trusted  on  how to change this. You can limit the amount of
       redirects to follow by using the --max-redirs option.

       When curl follows a redirect and the request is not a plain GET (for example POST or PUT), it will
       do  the  following  request  with a GET if the HTTP response was 301, 302, or 303. If the response
       code was any other 3xx code, curl will re-send the following request  using  the  same  unmodified
-I, --head
       (HTTP/FTP/FILE)  Fetch the HTTP-header only! HTTP-servers feature the command HEAD which this uses
       to get nothing but the header of a document. When used on a FTP or FILE file,  curl  displays  the
       file size and last modification time only.
-X, --request <command>
       (HTTP)  Specifies  a  custom  request  method to use when communicating with the HTTP server.  The
       specified request will be used instead of the method otherwise used (which defaults to GET).  Read
       the  HTTP  1.1 specification for details and explanations. Common additional HTTP requests include
       PUT and DELETE, but related technologies like WebDAV offers PROPFIND, COPY, MOVE and more.

       (FTP) Specifies a custom FTP command to use instead of LIST when doing file lists with FTP.

       If this option is used several times, the last one will be used.
-G, --get
       When used, this option will make all data specified with -d, --data or --data-binary to be used in
       a HTTP GET request instead of the POST request that otherwise would be  used.  The  data  will  be
       appended to the URL with a '?' separator.

       If  used  in  combination  with  -I, the POST data will instead be appended to the URL with a HEAD

       If this option is used several times, the  following  occurrences  make  no  difference.  This  is
       because  undoing  a  GET  doesn't  make sense, but you should then instead enforce the alternative
       method you prefer.
source manpages: curl