# libtmux.common.EnvironmentMixin

- **Module:** libtmux.common
- **Package:** libtmux
- **Language:** Python
- **Kind:** class
- **Source:** https://github.com/tmux-python/libtmux/blob/9fdd083a8181a827889337b63cd4e6daea661a8c/src/libtmux/common.py#L54
- **Page:** https://libtmux.org/en/py/latest/reference/libtmux-common-environmentmixin/

Mixin for manager session and server level environment variables in tmux.

## Members

- `_add_option` (attribute)
- `cmd` (attribute)
- `__init__` (method)
- `set_environment` (method): Set environment ``$ tmux set-environment <name> <value>``.
- `unset_environment` (method): Unset environment variable ``$ tmux set-environment -u <name>``.
- `remove_environment` (method): Remove environment variable ``$ tmux set-environment -r <name>``.
- `show_environment` (method): Show environment ``$ tmux show-environment -t [session]``.
- `getenv` (method): Show environment variable ``$ tmux show-environment -t [session] <name>``.