type JsonOptions = {
    json?: boolean;
};
/** Outside every instance home by design: a backup inside the thing it backs up
 *  is lost with it. */
export declare function defaultBackupRoot(homeDir?: string): string;
export declare function runBackup(options?: {
    root?: string;
    retentionDays?: string;
    maxTotalGb?: string;
} & JsonOptions): Promise<void>;
export declare function runBackupList(options?: {
    root?: string;
} & JsonOptions): void;
export declare function runBackupVerify(snapshot: string, options?: JsonOptions): void;
export declare function runBackupRestore(snapshot: string, options?: {
    home?: string;
    force?: boolean;
} & JsonOptions): Promise<void>;
export {};
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