systemctl 0.1.1

Small crate to interact with systemd units
Documentation 
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# systemctl

Small rust crate to interact with systemd units

[![crates.io](https://img.shields.io/crates/v/systemctl.svg)](https://crates.io/crates/systemctl)
[![License](https://img.shields.io/badge/license-Apache%202.0-blue?style=flat-square)](https://github.com/gwbres/systemctl/blob/main/LICENSE-APACHE)
[![License](https://img.shields.io/badge/license-MIT-blue?style=flat-square)](https://github.com/gwbres/systemctl/blob/main/LICENSE-MIT) 
[![crates.io](https://img.shields.io/crates/d/systemctl.svg)](https://crates.io/crates/systemctl)   
[![Rust](https://github.com/gwbres/systemctl/actions/workflows/rust.yml/badge.svg?branch=main)](https://github.com/gwbres/systemctl/actions/workflows/rust.yml)
[![crates.io](https://docs.rs/systemctl/badge.svg)](https://docs.rs/systemctl/badge.svg)

## Unit / service operation

Nominal service operations:

```rust
use systemctl;
systemctl::stop("systemd-journald.service").unwrap();
systemctl::restart("systemd-journald.service").unwrap();
```

## Service enumeration

```rust
use systemctl;
// list all units
systemctl::list_units(None, None);

// list all services 
// by adding a --type filter
systemctl::list_units(Some("service"), None);

// list all services currently `enabled` 
// by adding a --state filter
systemctl::list_units(Some("service"), Some("enabled"));
```

## Unit structure

Use the unit structure for more information

```rust
let unit = systemctl::Unit::from_systemctl("sshd")
    .unwrap();
unit.restart().unwrap();
println!("active: {}", unit.active);
println!("preset: {}", unit.preset);
println!("auto_start (enabled): {}", unit.auto_start);
println!("config script : {}", unit.script);
println!("pid: {}", unit.pid);
println!("Running task(s): {}", unit.tasks.unwrap());
println!("Memory consumption: {}", unit.memory.unwrap());
```

## TODO

* [ ] conclude `from_systemctl()` parser
* [ ] restart(), status() syscalls