Query and set POSIX time attributes of a file. Both OldTimes and
NewTimes are lists of option-terms. Times are represented in
SWI-Prolog's standard floating point numbers. New times may be
specified as now to indicate the current time. Defined options
are:
- access(Time)
- Describes the time of last access of the file. This value
can be read and written.
- modified(Time)
- Describes the time the contents of the file was last
modified. This value can be read and written.
- changed(Time)
- Describes the time the file-structure itself was changed by
adding (
link()) or removing (unlink()) names.
Below are some example queries. The first retrieves the
access-time, while the second sets the last-modified time to the
current time.
?- set_time_file(foo, [access(Access)], []).
?- set_time_file(foo, [], [modified(now)]).