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Function

file-write-date

file-write-date pathspec ⇒ date

Arguments and Values

pathspeca pathname designator.
datea universal time or nil.

Description

Returns a universal time representing the time at which the file specified by pathspec was last written (or created), or returns nil if such a time cannot be determined.

Examples

 (with-open-file (s "noel.text" 
                    :direction :output :if-exists :error)
   (format s "~&Dear Santa,~2
                Please leave lots of toys.~2
             ~2
   (truename s))
⇒  #P"CUPID:/susan/noel.text"
 (with-open-file (s "noel.text")
   (file-write-date s))
⇒  2902600800

Affected By

The host computer’s file system.

Exceptional Situations

An error of type file-error is signaled if pathspec is wild.

An error of type file-error is signaled if the file system cannot perform the requested operation.

See Also

Universal Time,

Pathnames as Filenames

Backlinks

File Operations on Open and Closed Streams, File System Concepts, Files Dictionary, Stream Arguments to Standardized Functions, Symbols in the COMMON-LISP Package