Robert Moskowitz wrote:
Scott Silva wrote:
Robert Moskowitz spake the following on 8/6/2007 2:40 PM:
I had at one point copied a large number of files between drives and
did
not use the -p and thus the timestamps were all set to the date of the
copy.
I did not catch this, and deleted the source. So I 'lived' with it and
have since changed many files.
Well, yesterday I found a good backup of many of those files and I want
to restore them to their proper dates.
cp -p -u is exactly the opposite of what I want. I want to copy
only if
the source files have an earlier date than the destination files.
The source files are just an old copy on another drive that I found
when
cleaning up things...
Can you restore the backups, and then cp -u from the existing
directory over
the restored copy?
No. Because all the files, changed or not since that date, are newer
than what is on the backup. So it would overwrite everything.
Maybe you could iterate through the file directories on your good backup
and do a "touch -r" on the current set using the timestamps from the
good backup:
foreach file in backup_dir:
if file exists in current_dir:
touch -r backup_dir/file current_dir/file
or something like that...
-Greg
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