1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Long: version 5Short: V 6Help: Show version number and quit 7Category: important curl 8Added: 4.0 9Multi: custom 10See-also: 11 - help 12 - manual 13Example: 14 - --version 15--- 16 17# `--version` 18 19Displays information about curl and the libcurl version it uses. 20 21The first line includes the full version of curl, libcurl and other 3rd party 22libraries linked with the executable. 23 24The second line (starts with `Release-Date:`) shows the release date. 25 26The third line (starts with `Protocols:`) shows all protocols that libcurl 27reports to support. 28 29The fourth line (starts with `Features:`) shows specific features libcurl 30reports to offer. Available features include: 31 32## `alt-svc` 33Support for the Alt-Svc: header is provided. 34 35## `AsynchDNS` 36This curl uses asynchronous name resolves. Asynchronous name resolves can be 37done using either the c-ares or the threaded resolver backends. 38 39## `brotli` 40Support for automatic brotli compression over HTTP(S). 41 42## `CharConv` 43curl was built with support for character set conversions (like EBCDIC) 44 45## `Debug` 46This curl uses a libcurl built with Debug. This enables more error-tracking 47and memory debugging etc. For curl-developers only! 48 49## `gsasl` 50The built-in SASL authentication includes extensions to support SCRAM because 51libcurl was built with libgsasl. 52 53## `GSS-API` 54GSS-API is supported. 55 56## `HSTS` 57HSTS support is present. 58 59## `HTTP2` 60HTTP/2 support has been built-in. 61 62## `HTTP3` 63HTTP/3 support has been built-in. 64 65## `HTTPS-proxy` 66This curl is built to support HTTPS proxy. 67 68## `IDN` 69This curl supports IDN - international domain names. 70 71## `IPv6` 72You can use IPv6 with this. 73 74## `Kerberos` 75Kerberos V5 authentication is supported. 76 77## `Largefile` 78This curl supports transfers of large files, files larger than 2GB. 79 80## `libz` 81Automatic decompression (via gzip, deflate) of compressed files over HTTP is 82supported. 83 84## `MultiSSL` 85This curl supports multiple TLS backends. 86 87## `NTLM` 88NTLM authentication is supported. 89 90## `NTLM_WB` 91NTLM delegation to winbind helper is supported. 92 93## `PSL` 94PSL is short for Public Suffix List and means that this curl has been built 95with knowledge about "public suffixes". 96 97## `SPNEGO` 98SPNEGO authentication is supported. 99 100## `SSL` 101SSL versions of various protocols are supported, such as HTTPS, FTPS, POP3S 102and so on. 103 104## `SSPI` 105SSPI is supported. 106 107## `TLS-SRP` 108SRP (Secure Remote Password) authentication is supported for TLS. 109 110## `TrackMemory` 111Debug memory tracking is supported. 112 113## `Unicode` 114Unicode support on Windows. 115 116## `UnixSockets` 117Unix sockets support is provided. 118 119## `zstd` 120Automatic decompression (via zstd) of compressed files over HTTP is supported. 121