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: Protocols: HTTP FTP SFTP FILE Category: http ftp sftp file Added: 4.0 Multi: single See-also:
--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.
specifies the first 500 bytes
specifies the second 500 bytes
specifies the last 500 bytes
specifies the bytes from offset 9500 and forward
specifies the first and last byte only(*)(HTTP)
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.