# session.Session.removeEnvironment

- **Module:** session
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ts/blob/073b9d7dedad900bff6f5ec0ea47794e40225870/packages/libtmux/src/session.ts#L316
- **Page:** https://libtmux.org/en/ts/latest/reference/session-session-removeenvironment/

```
removeEnvironment(name: string): Promise<void>
```

Mark a variable in this session's environment for removal from the environment of processes tmux starts, leaving the entry in place.

## Examples

```ts
await session.removeEnvironment("EDITOR");
```

## Parameters

- `name` (`string`)

## tmux command

The tmux commands behind `removeEnvironment`.

- [`set-environment`](/en/tmux/latest/manual/set-environment/)

## tmux C API

The C declarations in tmux that implement these commands.

- [`cmd_set_environment_entry`](/en/tmux/latest/reference/c-variable-cmd_set_environment_entry/) (attribute)
- [`cmd_set_environment_exec`](/en/tmux/latest/reference/c-function-cmd-set-environment-c-cmd_set_environment_exec/) (function)

## In other ports

Mark a session variable so new processes start without it

| Language | Equivalent |
| --- | --- |
| Python | [`libtmux.Session.remove_environment`](/en/py/latest/reference/libtmux-session-remove_environment/) (method) |
| Lua | [`libtmux.Session:remove_environment`](/en/lua/latest/reference/libtmux-session-remove_environment/) (method) |
| Rust | no equivalent on `Session` |
| Go | [`tmux.Session.RemoveEnvironment`](/en/go/latest/reference/tmux-session-removeenvironment/) (method) |
| Java | no equivalent on `Session` |
| C# | no equivalent on `Session` |
| C++ | no equivalent on `Session` |
| Swift | [`Server.removeEnvironment(_:in:)`](/en/swift/latest/reference/server-removeenvironment(_-in-)/) (method) |

No equivalent is recorded in Ruby, PowerShell, Julia, Elixir, Kotlin, Scala or F#.