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string openssl

[openssl] Run and understand. Output a random string with the openssl command

created-2025/11/13 updated-2026/03/21

Introduction

This repository runs an openssl command to output a random string encoded in base64

Commands that need to be installed

None in particular

Quickstart

Run the openssl command to output a random string

ubuntu

openssl rand -base64 9 | head -c 10 | xargs
Output results
DQhylbdoRt

macos

MacPorts

openssl rand -base64 9 | head -c 10 | xargs
Output results
DQhylbdoRt

windows

WSL2

openssl rand -base64 9 | head -c 10 | xargs
Output results
DQhylbdoRt

MSYS2 MINGW64

openssl rand -base64 9 | head -c 10 | xargs
Output results
DQhylbdoRt

Procedure

ubuntu

Click to open details

Advance confirmation

Enter the following command into the terminal and if command not found does not appear, it is OK.

Nothing in particular

preinstall

If the command not found appears in the terminal, please install it using the following command.

Nothing in particular

command

Executing the following command should output a random base64 string like the one shown in the details

openssl rand -base64 9 | head -c 10 | xargs
detail
DQhylbdoRt

macos

Click to open details

Advance confirmation

Enter the following command into the terminal and if command not found does not appear, it is OK.

Nothing in particular

※MacOS uses the MacPorts package manager to manage commands. If you haven’t installed it yet, please see the MacPorts installation instructions at the link below.

It also allows you to set aliases for commands so that you can call them without conflicting with existing environments.

If you are using this blog for the first time, please refer to the following two articles to set up your environment.

preinstall

If the command not found appears in the terminal, install it using the following command and set an alias.

Nothing in particular

COMMAND

Executing the following command should output a random base64 string like the one shown in the details

openssl rand -base64 9 | head -c 10 | xargs
detail
DQhylbdoRt

windows

Click to open details

Advance confirmation

Enter the following command into the prompt and if command not found does not appear, it’s OK.

WSL2
Nothing in particular
MSYS2 MINGW64
Nothing in particular

※Windows has been confirmed to work with WSL2 and MSYS2 MINGW64. Please install WSL2 if possible, and if you are unable to set it up, you can run it by installing MSYS2, but there may be some commands that can only be run in WSL2. Please refer to the following article for instructions on how to install WSL2 and MSYS2.

preinstall

If the command not found appears in the prompt, please install it using the following command.

WSL2
Nothing in particular
MSYS2 MINGW64
Nothing in particular

command

Executing the following command should output a random base64 string like the one shown in the details

WSL2
openssl rand -base64 9 | head -c 10 | xargs
detail
DQhylbdoRt
MSYS2 MINGW64
openssl rand -base64 9 | head -c 10 | xargs
detail
DQhylbdoRt

Afterword

The 9 and 10 in openssl and head are the number of bytes. 12 characters are generated from 9 bytes, and the first 10 bytes (10 characters) are displayed in head.

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