# The OSError interface

`OSError.E` is an exception raised by a number of operating system interfaces such as `File`, `FS`, and `Process`. errors, operating system

operating system errors

    INTERFACE OSError;

    IMPORT AtomList;

    TYPE Code = AtomList.T;

    EXCEPTION E(Code);

    END OSError.

`E(code)` is raised by a number of methods and procedures in the operating system interfaces to signal any of an open-ended class of failures.