/// <reference types="node" />
/// <reference types="node" />
export declare function exec(command: string, stdout?: ((...args: any[]) => void) | NodeJS.WriteStream, stderr?: ((...args: any[]) => void) | NodeJS.WriteStream, stdin?: NodeJS.ReadableStream | string): Promise<string>;
export declare function spawn(command: string, args: string[], stdout?: ((...args: any[]) => void) | NodeJS.WriteStream, stderr?: ((...args: any[]) => void) | NodeJS.WriteStream, stdin?: NodeJS.ReadableStream | string): Promise<void>;
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