import type { ImageAttachment } from './attachments.js';
export declare function isCommandAvailable(cmd: string, args: string[]): Promise<boolean>;
export declare function linuxClipboardRead(cmd: string, args: string[]): Promise<Buffer | null>;
export declare function detectMediaTypeLinux(buffer: Buffer): ImageAttachment['mediaType'] | null;
export declare function readClipboardImageLinux(): Promise<ImageAttachment | null>;