export declare class Shell {
    private child;
    private log;
    private bin;
    private args;
    private opts;
    private lines;
    private stdio;
    private stderr;
    private after;
    private silent;
    constructor(args: any[], env?: any, stdio?: Function, stderr?: Function, after?: Function, silent?: boolean);
    execute(): Promise<number>;
    kill(): void;
}