oscclip is a little, zero dependency python utility which utilizes the system clipboard via OSC52 escape sequences.
Using these sequences, the system clipboard is accessible via SSH as well.
Terminal multiplexers, such as tmux and screen are supported.
Setting the clipboard
$ echo "Foo" | osc-copy
Setting the clipboard and bypass terminal multiplexers
$ echo "Foo" | osc-copy --bypass
Reading the clipboard
$ osc-paste
Foo
For a list of terminals that support OSC52, see this table.
There is a bug in tmux
Due to this osc-paste does not work with tmux < 3.3 running in foot.
In order to make --bypass work, allow-passthrough must be enabled.
Check the manpage of tmux.
osc-copy issues a warning to stderr when this option is not set and --bypass is present.
Arch Linux
$ paru -S oscclip
Run via poetry
Check if your distribution provides poetry via its package management system!
It might be called python-poetry, python3-poetry or similar!
Otherwise: https://python-poetry.org/docs/#installation
$ poetry install [--no-dev]
$ poetry run ocs-copy
--no-dev omits the development dependencies, such as static code checkers.