# Bevy Local Commands
[](https://github.com/edouardpoitras/bevy_local_commands/actions/workflows/rust.yml)
[](https://crates.io/crates/bevy_local_commands)
[](https://docs.rs/bevy_local_commands)


Bevy plugin to manage local shell commands.
## Usage
**Add the plugin:**
```rust
// ...
.add_plugins(BevyLocalCommandsPlugin)
// ...
```
**Run shell commands:**
```rust
fn run_command(mut commands: Commands) {
commands.spawn(LocalCommand::new("bash").args(["-c", "sleep 1 && echo slept"]));
}
```
**See commands started and kill running commands:**
```rust
fn kill_started_command(mut active_processes: Query<&mut Process>) {
for mut process in active_processes.iter_mut() {
warn!("Killing process {}", process.id());
process.kill().unwrap();
}
}
```
**Receive command output:**
```rust
fn get_command_output(mut process_output_event: EventReader<ProcessOutput>) {
for output in process_output_event.read() {
info!("Output for command {:?}", output.entity);
for line in output.lines() {
info!("Line Output: {}", line);
}
}
}
```
**Send command input:**
```rust
fn send_command_input(
mut process_output_event: EventReader<ProcessOutput>,
mut active_processes: Query<&mut Process>,
) {
for output in process_output_event.read() {
for line in output.lines() {
if line.ends_with("Prompt String: ") {
let mut process = active_processes.get_mut(output.entity).unwrap();
process.println("Text to send").expect("Failed to write to process");
}
}
}
}
```
**See commands completed:**
```rust
fn get_completed(mut process_completed_event: EventReader<ProcessCompleted>) {
for completed in process_completed_event.read() {
info!(
"Command completed (Entity - {}, Success - {})",
completed.entity,
completed.exit_status.success()
);
}
}
```
**Retry and cleanup behavior:**
```rust
fn retries_and_cleanup_on_completion(mut commands: Commands) {
commands.spawn((
LocalCommand::new("bash").args(["-c", "sleep 1 && invalid-command --that=fails"]),
// Attempt the command 3 times before giving up
// NOTE: The Retry component will be removed from the entity when no retries are left
Retry::Attempts(3)
// Cleanup::DespawnEntity will despawn the entity upon process completion.
// Cleanup::RemoveComponents will remove this crate's components upon process completion.
Cleanup::DespawnEntity
));
}
```
## Todo
- [ ] Mac testing (not sure if it works yet)
## Bevy Compatilibity
| 0.14 | 0.6 |
| 0.13 | 0.5 |
| 0.12 | 0.4 |
| 0.11 | 0.1 |