In addition to pbcopy for macOS and clip for Windows, there's also xclip for Linux. It doesn't look like it's been updated in a long time, but it meets my needs

In addition to pbcopy for macOS and clip for Windows, there's also xclip for Linux. It doesn't look like it's been updated in a long time, but it meets my needs. https://github.com/astrand/xclip https://github.com/astrand/xclip