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20.1 File System Concepts

This section describes the Common Lisp interface to file systems. The model used by this interface assumes that files are named by filenames, that a filename can be represented by a pathname object, and that given a pathname a stream can be constructed that connects to a file whose filename it represents.

For information about opening and closing files, and manipulating their contents, see Chapter 21 Streams.

The next figure lists some operators that are applicable to files and directories.

File and Directory Operations
compile-file file-length open
delete-file file-position probe-file
directory file-write-date rename-file
file-author load with-open-file

20.1.1  Coercion of Streams to Pathnames
20.1.2  File Operations on Open and Closed Streams
20.1.3  Truenames

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