curl/docs/cmdline-opts/range.md
Daniel Stenberg 2494b8dd51
docs/cmdline: change to .md for cmdline docs
- switch all invidual files documenting command line options into .md,
   as the documentation is now markdown-looking.

 - made the parser treat 4-space indents as quotes

 - switch to building the curl.1 manpage using the "mainpage.idx" file,
   which lists the files to include to generate it, instead of using the
   previous page-footer/headers. Also, those files are now also .md
   ones, using the same format. I gave them underscore prefixes to make
   them sort separately:
   _NAME.md, _SYNOPSIS.md, _DESCRIPTION.md, _URL.md, _GLOBBING.md,
   _VARIABLES.md, _OUTPUT.md, _PROTOCOLS.md, _PROGRESS.md, _VERSION.md,
   _OPTIONS.md, _FILES.md, _ENVIRONMENT.md, _PROXYPREFIX.md,
   _EXITCODES.md, _BUGS.md, _AUTHORS.md, _WWW.md, _SEEALSO.md

 - updated test cases accordingly

Closes #12751
2024-01-23 14:30:15 +01:00

58 lines
1.5 KiB
Markdown

---
c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Long: range
Short: r
Help: Retrieve only the bytes within RANGE
Arg: <range>
Protocols: HTTP FTP SFTP FILE
Category: http ftp sftp file
Added: 4.0
Multi: single
See-also:
- continue-at
- append
Example:
- --range 22-44 $URL
---
# `--range`
Retrieve a byte range (i.e. a partial document) from an HTTP/1.1, FTP or SFTP
server or a local FILE. Ranges can be specified in a number of ways.
## 0-499
specifies the first 500 bytes
## 500-999
specifies the second 500 bytes
## -500
specifies the last 500 bytes
## 9500-
specifies the bytes from offset 9500 and forward
## 0-0,-1
specifies the first and last byte only(*)(HTTP)
## 100-199,500-599
specifies two separate 100-byte ranges(*) (HTTP)
##
(*) = NOTE that these make the server reply with a multipart response, which
is returned as-is by curl! Parsing or otherwise transforming this response is
the responsibility of the caller.
Only digit characters (0-9) are valid in the 'start' and 'stop' fields of the
'start-stop' range syntax. If a non-digit character is given in the range, the
server's response is unspecified, depending on the server's configuration.
Many HTTP/1.1 servers do not have this feature enabled, so that when you
attempt to get a range, curl instead gets the whole document.
FTP and SFTP range downloads only support the simple 'start-stop' syntax
(optionally with one of the numbers omitted). FTP use depends on the extended
FTP command SIZE.