curl/docs/cmdline-opts/version.md

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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 Added: 4.0 Multi: custom See-also:

• help
• manual Example:
• --version ---

--version

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 Release-Date:) shows the release date.

The third line (starts with Protocols:) shows all protocols that libcurl reports to support.

The fourth line (starts with Features:) shows specific features libcurl reports to offer. Available features include:

alt-svc

Support for the Alt-Svc: header is provided.

AsynchDNS

This curl uses asynchronous name resolves. Asynchronous name resolves can be done using either the c-ares or the threaded resolver backends.

brotli

Support for automatic brotli compression over HTTP(S).

CharConv

curl was built with support for character set conversions (like EBCDIC)

Debug

This curl uses a libcurl built with Debug. This enables more error-tracking and memory debugging etc. For curl-developers only.

ECH

ECH support is present.

gsasl

The built-in SASL authentication includes extensions to support SCRAM because libcurl was built with libgsasl.

GSS-API

GSS-API is supported.

HSTS

HSTS support is present.

HTTP2

HTTP/2 support has been built-in.

HTTP3

HTTP/3 support has been built-in.

HTTPS-proxy

This curl is built to support HTTPS proxy.

IDN

This curl supports IDN - international domain names.

IPv6

You can use IPv6 with this.

Kerberos

Kerberos V5 authentication is supported.

Largefile

This curl supports transfers of large files, files larger than 2GB.

libz

Automatic decompression (via gzip, deflate) of compressed files over HTTP is supported.

MultiSSL

This curl supports multiple TLS backends.

NTLM

NTLM authentication is supported.

NTLM_WB

NTLM delegation to winbind helper is supported. This feature was removed from curl in 8.8.0.

PSL

PSL is short for Public Suffix List and means that this curl has been built with knowledge about "public suffixes".

SPNEGO

SPNEGO authentication is supported.

SSL

SSL versions of various protocols are supported, such as HTTPS, FTPS, POP3S and so on.

SSPI

SSPI is supported.

TLS-SRP

SRP (Secure Remote Password) authentication is supported for TLS.

TrackMemory

Debug memory tracking is supported.

Unicode

Unicode support on Windows.

UnixSockets

Unix sockets support is provided.

zstd

Automatic decompression (via zstd) of compressed files over HTTP is supported.