• file-write-date pathspec → date

• pathspec - a pathname designator.
• date - a universal time or nil.

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.

(with-open-file (s "noel.text" :direction :output 
                               :if-exists :error)
  (format s "~&Dear Santa,~2%I was good this year.  ~
               Please leave lots of toys.~2%Love, Sue~
             ~2%attachments: milk, cookies~%")
  (truename s)) 

→

#P"CUPID:/susan/noel.text"



(with-open-file (s "noel.text")
  (file-write-date s)) 

→

2902600800 

The host computer's file system.

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.

{\secref\UniversalTime}, {\secref\PathnamesAsFilenames}

None.

\issue{FILE-OPEN-ERROR:SIGNAL-FILE-ERROR} \issue{PATHNAME-LOGICAL:ADD} \issue{FILE-OPEN-ERROR:SIGNAL-FILE-ERROR} \issue{PATHNAME-WILD:NEW-FUNCTIONS} \issue{FILE-OPEN-ERROR:SIGNAL-FILE-ERROR}