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- c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
- SPDX-License-Identifier: curl
- Long: version
- Short: V
- Help: Show version number and quit
- Category: important curl
- Example: --version
- Added: 4.0
- See-also: help manual
- Multi: custom
- ---
- Displays information about curl and the libcurl version it uses.
- The first line includes the full version of curl, libcurl and other 3rd party
- libraries linked with the executable.
- The second line (starts with "Protocols:") shows all protocols that libcurl
- reports to support.
- The third line (starts with "Features:") shows specific features libcurl
- reports to offer. Available features include:
- .RS
- .IP "alt-svc"
- Support for the Alt-Svc: header is provided.
- .IP "AsynchDNS"
- This curl uses asynchronous name resolves. Asynchronous name resolves can be
- done using either the c-ares or the threaded resolver backends.
- .IP "brotli"
- Support for automatic brotli compression over HTTP(S).
- .IP "CharConv"
- curl was built with support for character set conversions (like EBCDIC)
- .IP "Debug"
- This curl uses a libcurl built with Debug. This enables more error-tracking
- and memory debugging etc. For curl-developers only!
- .IP "gsasl"
- The built-in SASL authentication includes extensions to support SCRAM because
- libcurl was built with libgsasl.
- .IP "GSS-API"
- GSS-API is supported.
- .IP "HSTS"
- HSTS support is present.
- .IP "HTTP2"
- HTTP/2 support has been built-in.
- .IP "HTTP3"
- HTTP/3 support has been built-in.
- .IP "HTTPS-proxy"
- This curl is built to support HTTPS proxy.
- .IP "IDN"
- This curl supports IDN - international domain names.
- .IP "IPv6"
- You can use IPv6 with this.
- .IP "Kerberos"
- Kerberos V5 authentication is supported.
- .IP "Largefile"
- This curl supports transfers of large files, files larger than 2GB.
- .IP "libz"
- Automatic decompression (via gzip, deflate) of compressed files over HTTP is
- supported.
- .IP "MultiSSL"
- This curl supports multiple TLS backends.
- .IP "NTLM"
- NTLM authentication is supported.
- .IP "NTLM_WB"
- NTLM delegation to winbind helper is supported.
- .IP "PSL"
- PSL is short for Public Suffix List and means that this curl has been built
- with knowledge about "public suffixes".
- .IP "SPNEGO"
- SPNEGO authentication is supported.
- .IP "SSL"
- SSL versions of various protocols are supported, such as HTTPS, FTPS, POP3S
- and so on.
- .IP "SSPI"
- SSPI is supported.
- .IP "TLS-SRP"
- SRP (Secure Remote Password) authentication is supported for TLS.
- .IP "TrackMemory"
- Debug memory tracking is supported.
- .IP "Unicode"
- Unicode support on Windows.
- .IP "UnixSockets"
- Unix sockets support is provided.
- .IP "zstd"
- Automatic decompression (via zstd) of compressed files over HTTP is supported.
- .RE
- .IP
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