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I have Kurobox HG with Sylver. I also have a USB hard drive attached to it. I want to backup my movie folder to the USB hard drive.
I have installed rsync and I can sync my "Movie" folder in Kurobox with my USB drive.

rsync -a /mnt/movie/ /mnt2/usbdisk1/

This works great, but I want to schedule it with cron. I cannot make this work for some reasons. Please let me know what I am doing wrong. I have tried the following, but none of them worked.

1. log on as root and run "crontab -e".
Then add 00 4 * * * rsync -a /mnt/movie/ /mnt2/usbdisk1/

2. create a file called "backup.sh" in /usr/local/bin
Then, add rsync -a /mnt/movie/ /mnt2/usbdisk1/ in the script
After that run "crontab -e" and add
00 4 * * * /usr/local/bin/backup.sh
Lastly, run chmod 755 backup.sh

3. added the same backup.sh in cron.d folder.

I am still new to Linux and still learning little by little. I would appreciate your input.

What do mean when you say it does not work? Does the job get run and not work, or does the job not get run at all?

Maybe try this as your cron job

0 4 * * * rsync -av /mnt/movie/ /mnt2/usbdisk1/ > $HOME/output.txt 2>&1

This will backup the movie dir at 4 am everyday and leave the output of the rsync command in the file ~/output.txt

I think it worked.

I meant it didn't seem to run at all with the crontab entry. (at least last night)

I entered number of entries like below because I do not know which one works, but it seems one of them did the job at least. Which line is the correct one?

20 10 * * * /etc/cron.d/backup.sh
30 10 * * * /etc/cron.d/backup
40 10 * * * /root/scripts/set_backup.sh
50 10 * * * /usr/local/bin/rsync -a /mnt/movie/ /mnt2/usbdisk1
00 11 * * * /usr/local/bin/rsync -a /mnt/movie/ /mnt2/usbdisk1/
10 11 * * * /usr/local/bin/rsync -a /mnt/movie/ /mnt2/usbdisk1/.
20 11 * * * root /usr/local/bin/rsync -a /mnt/movie/ /mnt2/usbdisk1/