
In order to know which version of OpenSSL has been installed you first need to type command openssl on the Terminal prompt and then type version
Example:# openssl
OpenSSL> version
OpenSSL 1.1.1f 31 Mar 2020
You can use the below options to get more details,
-a To show all data.
-b To show the build date.
-d To show configuration directory.
-e To show engines directory.
-f To show compiler flags used.
-o To show some internal data options.
-p To show target build platform.
-r To show random seeding options.
-v To show the library version.
# version -a
OpenSSL 1.1.1f 31 Mar 2020
built on: Wed Mar 9 12:12:45 2022 UTC
platform: debian-arm64
options: bn(64,64) rc4(char) des(int) blowfish(ptr)
compiler: gcc -fPIC -pthread -Wa,--noexecstack -Wall -Wa,--noexecstack -g -O2 -fdebug-prefix-map=/build/openssl-D0VooA/openssl-1.1.1f=. -fstack-protector-strong -Wformat -Werror=format-security -DOPENSSL_TLS_SECURITY_LEVEL=2 -DOPENSSL_USE_NODELETE -DOPENSSL_PIC -DOPENSSL_CPUID_OBJ -DOPENSSL_BN_ASM_MONT -DSHA1_ASM -DSHA256_ASM -DSHA512_ASM -DKECCAK1600_ASM -DVPAES_ASM -DECP_NISTZ256_ASM -DPOLY1305_ASM -DNDEBUG -Wdate-time -D_FORTIFY_SOURCE=2
OPENSSLDIR: "/usr/lib/ssl"
ENGINESDIR: "/usr/lib/aarch64-linux-gnu/engines-1.1"
Seeding source: os-specific
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