Enum EnvironmentPolicy 

pub enum EnvironmentPolicy {
    Auto,
    Inherit,
    UserBaseline,
    Clear,
}

Selects the base environment used for a newly spawned process.

Explicit values added through Command::env or Command::envs are applied after the selected base and therefore win on duplicate keys.

Variants

Auto

Choose from the process lifetime: contained subprocesses inherit, while detached daemons start from the logged-in user’s baseline.

Inherit

Inherit the spawning process’s environment.

UserBaseline

Start from the logged-in user’s machine + user environment.

Windows implements this with CreateEnvironmentBlock. Unix reconstructs a clean login environment from the user’s identity (getpwuid_r → USER/LOGNAME/HOME/SHELL, platform default PATH, carried-over locale/TZ/TMPDIR), falling back to inheritance only when the passwd entry cannot be resolved.

Clear

Start from an empty environment.

Trait Implementations

impl Clone for EnvironmentPolicy

fn clone(&self) -> EnvironmentPolicy

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for EnvironmentPolicy

impl Debug for EnvironmentPolicy

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for EnvironmentPolicy

fn default() -> EnvironmentPolicy

Returns the “default value” for a type.

impl Eq for EnvironmentPolicy

impl PartialEq for EnvironmentPolicy

fn eq(&self, other: &EnvironmentPolicy) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for EnvironmentPolicy