cubic 0.14.0

Cubic is a lightweight command line manager for virtual machines. It has a simple, daemon-less and rootless design. All Cubic virtual machines run isolated in the user context. Cubic is built on top of QEMU, KVM and cloud-init. Show all supported images: $ cubic images Create a new virtual machine instance: $ cubic create mymachine --image ubuntu:noble List all virtual machine instances: $ cubic instances Start an instance: $ cubic start <instance name> Stop an instance: $ cubic stop <instance name> Open a shell in the instance: $ cubic ssh <machine name> Copy a file from the host to the instance: $ cubic scp <path/to/host/file> <machine>:<path/to/guest/file> Copy a file from the instance to the hots: $ cubic scp <machine>:<path/to/guest/file> <path/to/host/file>
1
2
3
4
5
6
7
8
9
10
11
12
13
use std::time::{SystemTime, UNIX_EPOCH};

const PORT_MIN: u128 = 1024;
const PORT_MAX: u128 = 65535;

pub fn generate_random_ssh_port() -> u16 {
    (SystemTime::now()
        .duration_since(UNIX_EPOCH)
        .unwrap()
        .as_millis()
        % (PORT_MAX - PORT_MIN)
        + PORT_MIN) as u16
}