p_kill/
lib.rs

1use std::process::Command;
2
3pub struct Killer {
4    pub port: u32,
5}
6
7impl Killer {
8    pub fn kill_process_by_port(&self) {
9        if let Some(pid) = get_pid_by_port(&self.port) {
10            println!(
11                "PID of the process listening on port {}: {}",
12                self.port, pid
13            );
14            kill_process(pid);
15        } else {
16            println!("No process found listening on port {}", self.port);
17        }
18    }
19}
20
21pub fn get_pid_by_port(port: &u32) -> Option<u32> {
22    println!("port: {}", port);
23    let lsof_output = Command::new("lsof")
24        .arg("-t")
25        .arg("-i")
26        .arg(format!(":{}", port))
27        .output()
28        .expect("No pid found");
29
30    println!("{:#?}", lsof_output);
31
32    if lsof_output.stdout.is_empty() {
33        return None;
34    }
35
36    let output_str = String::from_utf8_lossy(&lsof_output.stdout);
37    let lines: Vec<&str> = output_str.split('\n').collect();
38
39    Some(lines[0].parse::<u32>().unwrap())
40}
41
42pub fn kill_process(pid: u32) {
43    Command::new("kill")
44        .arg("-9")
45        .arg(format!("{}", pid))
46        .output()
47        .expect("Cannot kill process");
48}
p_kill/lib.rs

p_kill/
lib.rs
