--- rigol-ds2000-shell.cc.orig	2015-01-28 01:06:00.000000000 +0100
+++ rigol-ds2000-shell.cc	2015-01-28 01:05:47.000000000 +0100
@@ -232,6 +232,40 @@ bool run_command(ViSession &vi, char *se
 		return true;
 	}
 
+	if (!strcmp(cmd, "DUMP")) 
+	{
+		char *filename = strtok(NULL, " \t\r\n");
+		char *query = strtok(NULL, "\t\r\n");
+
+		for (char *p = query; *p; p++)
+			if ('a' <= *p && *p <= 'z')
+				*p -= 'a' - 'A';
+
+		send_cmd(vi, query);
+
+		unsigned char *header = recv_data(vi, 11);
+		printf("Header: %s\n", header);
+
+		int num_bytes = atoi((char*)header + 2);
+		unsigned char *data = recv_data(vi, num_bytes + 1);
+
+		FILE *f = fopen(filename, "w");
+		if (f == NULL) {
+			fprintf(stderr, "Cannot open file '%s' for writing!\n", filename);
+			exit(1);
+		}
+		fwrite(data, num_bytes, 1, f);
+		fclose(f);
+
+		printf("Written %d bytes to file.\n", num_bytes);
+
+		free(header);
+		free(data);
+
+		printf("\n");
+		return true;
+	}
+
 	if (!strcmp(cmd, "SAVE_TXT") || !strcmp(cmd, "SAVE_BIN"))
 	{
 		char *query = strtok(NULL, " \t\r\n");