curl/docs/cmdline-opts/range.d
Daniel Stenberg ddaa85893d
curl.1: require "see also" for every documented option
gen.pl now generates a warning if the "See Also" field is not filled in for a
command line option

All command line options now provide one or more related options. 167
"See alsos" added!

Closes #8019
2021-11-15 23:06:41 +01:00

52 lines
1.5 KiB
Makefile

Long: range
Short: r
Help: Retrieve only the bytes within RANGE
Arg: <range>
Protocols: HTTP FTP SFTP FILE
Category: http ftp sftp file
Example: --range 22-44 $URL
Added: 4.0
See-also: continue-at append
---
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.
.RS
.TP 10
.B 0-499
specifies the first 500 bytes
.TP
.B 500-999
specifies the second 500 bytes
.TP
.B -500
specifies the last 500 bytes
.TP
.B 9500-
specifies the bytes from offset 9500 and forward
.TP
.B 0-0,-1
specifies the first and last byte only(*)(HTTP)
.TP
.B 100-199,500-599
specifies two separate 100-byte ranges(*) (HTTP)
.RE
.IP
(*) = NOTE that this will cause the server to reply with a multipart
response, which will be 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 will be unspecified, depending on the server's
configuration.
You should also be aware that many HTTP/1.1 servers do not have this feature
enabled, so that when you attempt to get a range, you will instead get 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.
If this option is used several times, the last one will be used.