OPENSSL-VERSION(1SSL) OpenSSL OPENSSL-VERSION(1SSL)
NAME
openssl-version - print OpenSSL version information
SYNOPSIS
openssl version [-help] [-a] [-v] [-b] [-o] [-f] [-p] [-d] [-e] [-m]
[-r] [-c] [-w]
DESCRIPTION
This command is used to print out version information about OpenSSL.
OPTIONS
-help
Print out a usage message.
-a All information, this is the same as setting all the other flags.
-v The current OpenSSL version.
-b The date the current version of OpenSSL was built.
-o Option information: various options set when the library was built.
-f Compilation flags.
-p Platform setting.
-d OPENSSLDIR setting.
-e ENGINESDIR settings.
-m MODULESDIR settings.
-r The random number generator source settings.
-c The OpenSSL CPU settings info.
-w The OpenSSL OSSL_WINCTX build time variable, if set. Used for
computing Windows registry key names. This option is unavailable on
non-Windows platforms.
HISTORY
In OpenSSL versions prior to 3.4, OpenSSL had a limitation regarding the
OPENSSLDIR, MODULESDIR and ENGINESDIR build time macros. These macros
were defined at build time, and represented filesystem paths. This is
common practice on unix like systems, as there was an expectation that a
given build would be installed to a pre-determined location. On Windows
however, there is no such expectation, as libraries can be installed to
arbitrary locations. OSSL_WINCTX was introduced as a new build time
variable to define a set of registry keys identified by the name
openssl-<version>-<ctx>, in which the <version> value is derived from
the version string in the openssl source, and the <ctx> extension is
derived from the OSSL_WINCTX variable. The values of OPENSSLDIR,
ENGINESDIR and MODULESDIR can be set to various paths underneath this
key to break the requirement to predict the installation path at build
time.
NOTES
The output of "openssl version -a" would typically be used when sending
in a bug report.
COPYRIGHT
Copyright 2000-2024 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
<https://www.openssl.org/source/license.html>.
3.5.4 2025-09-30 OPENSSL-VERSION(1SSL)
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