# tmux.Server.SetCommandAlias

- **Module:** tmux.Server
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/52968a3181c1c9e6d1b26c565d4b170968ae61c0/tmux/option_generated.go#L7128
- **Page:** https://libtmux.org/en/go/latest/reference/tmux-server-setcommandalias/

```
tmux.Server.SetCommandAlias(ctx: context.Context, value: SparseArray[string]) -> (SetArrayResult, error)
```

SetCommandAlias replaces the complete "command-alias" server option array with SparseArray[string], preserving holes and empty values (tmux 3.2a or later). Read it with [ServerOptionValues.CommandAlias] from [Server.Options]; [Server.UnsetOption] restores inheritance or the global default. Replacement is not atomic: the result reports confirmed writes, and failures stop without rollback. Serialize concurrent replacement of the same target and option.