# environ_copy

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/environ.c#L83
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-function-environ_copy/

```c
void environ_copy(struct environ *srcenv, struct environ *dstenv)
```

## Parameters

- `srcenv` (`struct environ *`)
- `dstenv` (`struct environ *`)

## Called by

- [`environ_for_session`](/en/tmux/3.2a/reference/c-function-environ_for_session/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/environ.c#L253)
- [`spawn_pane`](/en/tmux/3.2a/reference/c-function-spawn_pane/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/spawn.c#L304)

## Calls

- [`environ_clear`](/en/tmux/3.2a/reference/c-function-environ_clear/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/environ.c#L89)
- [`environ_set`](/en/tmux/3.2a/reference/c-function-environ_set/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/environ.c#L91)

## Referenced declarations

- [`environ`](/en/tmux/3.2a/reference/c-struct-environ/) (struct)
- [`environ_entry.flags`](/en/tmux/3.2a/reference/c-struct-environ_entry-flags/) (attribute)
- [`environ_entry.name`](/en/tmux/3.2a/reference/c-struct-environ_entry-name/) (attribute)
- [`environ_entry.value`](/en/tmux/3.2a/reference/c-struct-environ_entry-value/) (attribute)