The Standard-IO Library

The standard-IO module of the standard-IO library exports three names for the standard input, output, and error streams.


*standard-error* [Constant]

The <stream> instance corresponding to the standard error.

Type

<stream>

Description

The standard error <stream>. This usually represents the terminal; however most UNIX-like operating systems permit the standard error stream to be redirected at the command line.


*standard-input* [Constant]

The <stream> instance corresponding to the standard input.

Type

<stream>

Description

The standard input <stream>. Usually, this stream reads from the terminal for its data; however most UNIX-like operating systems permit the standard input stream to be redirected at the command line.


*standard-output* [Constant]

The <stream> instance corresponding to the standard output.

Type

<stream>

Description

The standard output <stream>. This usually represents the terminal (just like *standard-error* ); however most UNIX-like operating systems permit the standard output stream to be redirected at the command line.