[SOLVED] Copy based on date

Fixit7 · 07-06-2015, 06:58 PM

I would like a script that would copy files based on the date.

I would only want only one copy per day.

I think that I would need a marker file to show that a copy was already made for the current day.

Keith Hedger · 07-06-2015, 07:02 PM

What have you done for yourself so far? post your attempts and any errors.

Fixit7 · 07-06-2015, 08:22 PM

I do not have any thing so far.

You guys really like seeing Solved. :-)

michaelk · 07-06-2015, 08:33 PM

Based on date is a bit ambiguous. You can find lots of examples of using the find command to copy files based on date. By using cron you can copy the files once a day at a certain time.

http://www.tecmint.com/35-practical-...-find-command/

Fixit7 · 07-07-2015, 08:45 PM

It is not what I need.

I have a script that copies files to another drive.

I want to modify it so it only copies once per day and aborts if it has already run once.

michaelk · 07-07-2015, 09:06 PM

One idea would be to create a file using the touch command after the script copies the files that uses the date as the name. Then add a if then that checks if that file exists before the copy.

Fixit7 · 07-08-2015, 06:43 AM

How would that work since the date is different each day ?

7-8-15.txt, 7-9.15.txt

michaelk · 07-08-2015, 07:02 AM

I really do not understand. If you have a script that copies files then only run it once a day. Since I don't know how the script actually works I just threw out an idea.

Code:

today=$( date +%F )

if [ ! -f "$today.txt" ] 
then 
  copy files
  touch $today.txt
fi

It will create a dummy file each day. Its up to you to delete them etc.

Fixit7 · 07-08-2015, 08:52 AM

Thanks.

Do not mean to be a P.I.T.A.

Sometimes I do a shutdown more than once a day.

So if I delete the file, it will execute the script more than once a day.

This will make a file with the current date as the name.

Quote:

touch `date +m-%d-%Y-%T`.txt

How could I compare the filename with the current date and then proceed based on the comparison ?

michaelk · 07-08-2015, 09:12 AM

Yes, if you delete file on the same day then it will execute the script again.

The code I posted will compare the current date with the filename. If the file does not exist then your script should copy the files. Adding time to the filename will overly complicate the script and from what you posted is not required.

You can add another if statement like the following after the files are copied.

Code:

yesterday=$( date --date="-1 day" +%F )

if [ -f "yesterday"] 
then
  rm $yesterday.txt
fi