use std::process::Command;
use std::io;

pub fn get_log(unit: &str, lines: i32) -> io::Result<String> {
    let status = try!(Command::new("journalctl")
                      .args(&["-u", unit,
                              "-n", &lines.to_string()])
                      .output());
    Ok(String::from_utf8_lossy(&status.stdout).into_owned())
}