+extern void list_builtin_commands (void);
+extern void display_builtin_command (const char *cmd);
+extern void free_strings (char **argv);
+extern void print_strings (char * const * const argv);
+extern void print_table (char * const * const argv);
+extern int launch (guestfs_h *);
+extern int is_true (const char *str);
+extern char **parse_string_list (const char *str);