Apropos

file-write-dateFunction

    Syntax

    file-write-date pathspec date

    Arguments and Values

    pathspec — a pathname designator.

    date — a 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%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
    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

    Section 25.1.4.2 (Universal Time), Section 19.1.2 (Pathnames as Filenames)