# tmux.ServerOptions.ProcessEnvironment

- **Module:** tmux.ServerOptions
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** attribute
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/server_options.go#L50
- **Page:** https://libtmux.org/reference/go/tmux-serveroptions-processenvironment/

ProcessEnvironment replaces the child process environment. Nil snapshots the current process environment. A non-nil empty slice supplies no caller-provided variables. Execution may add variables required by Go's target platform and a canonical TMUX_TMPDIR that freezes named or default socket selection. Duplicate names retain their last value. Entries containing NUL are rejected except on Plan 9, where NUL separates path-list elements. NewServer clones the slice.