# tmux.Server.IfShell

- **Module:** tmux.Server
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/server_exec.go#L272
- **Page:** https://libtmux.org/reference/go/tmux-server-ifshell/

```
tmux.Server.IfShell(ctx: context.Context, request: IfShellRequest) -> error
```

IfShell executes ThenCommand when ShellCommand succeeds and ElseCommand, if present, when it fails. A completed stderr result is an error; cancellation can interrupt delivery without proving that tmux did not execute a branch.