blob: ab1b126575672a07d953597b375fe00111fc8610 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
---
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 if specifying multiple ranges and the server supports it then
it replies with a multiple part response that curl returns as-is. It
contains meta information in addition to the requested bytes. 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.
When using this option for HTTP uploads using POST or PUT, functionality is
not guaranteed. The HTTP protocol has no standard interoperable resume upload
and curl uses a set of headers for this purpose that once proved working for
some servers and have been left for those who find that useful.
This command line option is mutually exclusive with --continue-at: you can only
use one of them for a single transfer.
|
