This crate provides a safe interface for reading and writing information to the kernel using the sysctl interface.
[](https://crates.io/crates/sysctl)
*Currently only developed and tested on FreeBSD.*
*Contributions for improvements and other platforms are welcome.*
### Documentation
Since the crate only builds on FreeBSD documentation is not available on https://docs.rs/sysctl
Available here: https://johalun.github.io/sysctl-rs/sysctl/index.html
or, to generate documentation locally do:
```sh
$ git clone https://github.com/johalun/sysctl-rs && cd sysctl-rs
$ cargo doc
$ firefox target/doc/sysctl/index.html
```
### Usage
Add to `Cargo.toml`
```toml
[dependencies]
sysctl = "0.1.2"
```
### Example
sysctl comes with several examples, see the examples folder.
Run with:
```sh
$ cargo run --example value
```
Or in a separate crate:
```rust
extern crate sysctl;
fn main() {
let ctl = "kern.osrevision";
let d: String = sysctl::description(ctl).unwrap();
println!("Description: {:?}", d);
let val_enum = sysctl::value(ctl).unwrap();
if let sysctl::CtlValue::Int(val) = val_enum {
println!("Value: {}", val);
}
}
```