linux下的curl命令很好用

NAME
       curl - transfer a URL

SYNOPSIS
       curl [options] [URL...]

DESCRIPTION
       curl  is a tool to transfer data from or to a server, using one of the
       supported protocols (HTTP, HTTPS, FTP,  FTPS,  GOPHER,  DICT,  TELNET,
       LDAP  or  FILE). The command is designed to work without user interac-
       tion.

       curl offers a busload  of  useful  tricks  like  proxy  support,  user
       authentication, ftp upload, HTTP post, SSL (https:) connections, cook-
       ies, file transfer resume and more. As you will see below, the  amount
       of features will make your head spin!

       curl  is  powered  by  libcurl  for all transfer-related features. See
       libcurl(3) for details.