directory (Function)

Syntax:

Arguments and Values:

pathspec—a pathname designator, which may contain wild components.

pathnames—a list of physical pathnames.

Description:

Determines which, if any, files that are present in the file system have names matching pathspec, and returns a fresh list of pathnames corresponding to the truenames of those files.

An implementation may be extended to accept implementation-defined keyword arguments to directory.

Affected By:

The host computer's file system.

Exceptional Situations:

If the attempt to obtain a directory listing is not successful, an error of type file-error is signaled.

See Also:

pathname (System Class), logical-pathname (System Class), ensure-directories-exist, Section 20.1 (File System Concepts), Section 21.1.1.1.2 (Open and Closed Streams), Section 19.1.2 (Pathnames as Filenames)

Notes:

If the pathspec is not wild, the resulting list will contain either zero or one elements.

Common Lisp specifies “&key” in the argument list to directory even though no standardized keyword arguments to directory are defined. “:allow-other-keys t” may be used in conforming programs in order to quietly ignore any additional keywords which are passed by the program but not supported by the implementation.