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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
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
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.