On a published website, given a code snippet (marked as a language, ex, java, shell, …), add a button to let a user easily copy the snippet.
This would make knowledge bases that have a bunch of shell commands especially easy to use. As well as make code snippets easier in general to get out of the knowledge base.
On code snippets add a copy button similar to what the microsoft docs have
ex: Tutorial: Read a secret from Azure Key Vault in a Spring Boot application | Microsoft Docs → scroll down to commands, they have a convenient copy button.
This could be invisible and appear on hover to not pollute the pages too much.
Select the text manually and copy manually.