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Requires a supported filesystem, i.e. NTFS. Example: ```console > curl.exe https://curl.se/index.html --output test.txt --xattr --referer https://curl.se/ > cat < test.txt:Zone.Identifier [ZoneTransfer] HostUrl=https://curl.se/index.html ReferrerUrl=https://curl.se/ ``` Where newlines are CLRF, `ReferrerUrl` is set when using `--referer` option. Also: - test688: make it test `--referer`. - document `user.xdg.referrer.url` in `--xattr` man page. Refs: https://en.wikipedia.org/wiki/Mark_of_the_Web https://en.wikipedia.org/wiki/NTFS#Alternate_data_stream_(ADS) https://learn.microsoft.com/en-us/windows/win32/fileio/file-streams https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/c54dec26-1551-4d3a-a0ea-4fa40f848eb3 Ref: #22345 Closes #22354
30 lines
988 B
Markdown
30 lines
988 B
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Long: xattr
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Help: Store metadata in extended file attributes
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Category: output
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Added: 7.21.3
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Multi: boolean
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See-also:
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- remote-time
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- write-out
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- verbose
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Example:
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- --xattr -o storage $URL
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---
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# `--xattr`
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Store metadata in the extended file attributes.
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When saving output to a file, tell curl to store file metadata in extended
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file attributes. Currently, `curl` is stored in the `creator` attribute,
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the URL is stored in the `xdg.origin.url` attribute, for HTTP, the content
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type is stored in the `mime_type` attribute, and if set, the referrer URL in
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`user.xdg.referrer.url`. If the file system does not support extended
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attributes, a warning is issued.
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Since curl 8.22.0 this option is also supported on Windows, where it creates
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an Alternate Data Stream named `Zone.Identifier`. It contains an INI formatted
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`ZoneTransfer` section, with values: `HostUrl`, `ReferrerUrl` (if set).
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