man curl Command

Man page for apt-get curl Command

Man Page for curl in Linux

This tutorial shows the man page for man curl in linux.

Open terminal with 'su' access and type the command as shown below:
man curl

Result of the Command Execution shown below:

curl(1)                           Curl Manual                          curl(1)



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,  SCP,  SFTP,  TFTP,  DICT,
       TELNET,  LDAP  or  FILE).  The command is designed to work without user
       interaction.

       curl offers a busload of useful tricks like proxy support, user authen 
       tication,  FTP upload, HTTP post, SSL connections, cookies, file trans 
       fer resume and more. As you will see below, the number of features will
       make your head spin!

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

URL
       The URL syntax is protocol dependent. You'll find a  detailed  descrip 
       tion in RFC 3986.

       You  can  specify  multiple  URLs or parts of URLs by writing part sets
       within braces as in:

        http://site.{one,two,three}.com

       or you can get sequences of alphanumeric series by using [] as in:

        ftp://ftp.numericals.com/file[1 100].txt
        ftp://ftp.numericals.com/file[001 100].txt    (with leading zeros)
        ftp://ftp.letters.com/file[a z].txt

       No nesting of the sequences is supported at the moment, but you can use
       several ones next to each other:

        http://any.org/archive[1996 1999]/vol[1 4]/part{a,b,c}.html

       You  can  specify  any amount of URLs on the command line. They will be
       fetched in a sequential manner in the specified order.

       Since curl 7.15.1 you can also specify a step counter for  the  ranges,
       so that you can get every Nth number or letter:

        http://www.numericals.com/file[1 100:10].txt
        http://www.letters.com/file[a z:2].txt

       If  you  specify  URL  without protocol:// prefix, curl will attempt to
       guess what protocol you might want. It will then default  to  HTTP  but
       try  other  protocols based on often used host name prefixes. For exam 
       ple, for host names starting with "ftp." curl will assume you  want  to
       speak FTP.

       curl  will  do  its best to use what you pass to it as a URL. It is not
       trying to validate it as a syntactically correct URL by any  means  but
       is instead very liberal with what it accepts.

       Curl will attempt to re use connections for multiple file transfers, so
       that getting many files from the same server will not do multiple  con 
       nects / handshakes. This improves speed. Of course this is only done on
       files specified on a single command line and  cannot  be  used  between
       separate curl invokes.

PROGRESS METER
       curl  normally  displays a progress meter during operations, indicating
       the amount of transferred data,  transfer  speeds  and  estimated  time
       left, etc.

       However,  since  curl displays this data to the terminal by default, if
       you invoke curl to do an operation and it is about to write data to the
       terminal,  it disables the progress meter as otherwise it would mess up
       the output mixing progress meter and response data.

       If you want a progress meter for HTTP POST or PUT requests, you need to
       redirect  the  response  output to a file, using shell redirect (>),  o
       [file] or similar.

       It is not the same case for FTP upload as that operation does not  spit
       out any response data to the terminal.

       If you prefer a progress "bar" instead of the regular meter,  

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