# environ_unset

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/environ.c#L168
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-function-environ_unset/

```c
void environ_unset(struct environ *env, const char *name)
```

## Parameters

- `env` (`struct environ *`)
- `name` (`const char *`)

## Called by

- [`cmd_set_environment_exec`](/en/tmux/3.2a/reference/c-function-cmd-set-environment-c-cmd_set_environment_exec/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/cmd-set-environment.c#L94)

## Other function references

- [`environ_find`](/en/tmux/3.2a/reference/c-function-environ_find/) (function)

## Referenced declarations

- [`environ`](/en/tmux/3.2a/reference/c-struct-environ/) (struct)
- [`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)