I like to make several big folders copy/update to the USB memory stick for backup everyday.
cp -r -u is not my favorite here, because it takes too long.
I want to copy only new files changed 1 or several days ago, only 1 or 2 times a day.
Bottom line is I only want to check the file date and copy new files, to USB flash memory,
to make it fast.
The flow wil be :
(1) read files in specified folders
(2) Check if file date was modified less than 1 day,
(3) If no, skip, if yes then make copy to USB memory, maintaining directory structure.
(4) Say, only 3 files modified within 1 day then only 3 files will be copied, and directories has to be
created in memory stick if not-exist.
Thanks for help.