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.