Batch / Script for daily file admin

[Jongky]

Hi,

I have the NAS DS211J. I have a directory/folder which I would like to maintain by deleting files that are older than a month. Instead of running a batch / script from the computer, is there a way I can run a batch / script on the NAS itself to do this check on a daily basis ?

Thanks.

[maxxfi]

Probably "cron" is the answer.
You can write the script on the NAS, and tell cron with what periodicity to run it.

[Jongky]

Thanks Maxxfi...

One more question. How should I write the script into the crontab file if I want to delete files older than 60 days ?

[maxxfi]

I would e.g. create a script /usr/local/cleanoldfiles.sh like this:

Code: Select all

#!/bin/sh

TOPLEVEL=<replace-here-with-top-directory-where-to-delete-files>
MAXDAYS=60

# uncomment only 1st line to test, only second one to remove files
# find $TOPLEVEL -type f -mtime +$MAXDAYS -ls >/tmp/cleanold.log
# find $TOPLEVEL -type f -mtime +$MAXDAYS -exec rm {} \;


Set TOPLEVEL variable and initially, uncomment only the first 'find' line, the one with '-ls' so you can test that it behaves correctly.
Run the command "chmod +x /usr/local/cleanoldfiles.sh" to make it executable

Then, edit /etc/crontab and add a line like the following to run the script e.g. every night at 03:15
15 03 * * * root /usr/local/bin/cleanoldfiles.sh

Finally, run "/usr/syno/etc/rc.d/S04crond.sh stop" and "/usr/syno/etc/rc.d/S04crond.sh start" to restart the cron daemon (to activate your changes in /etc/crontab)

Test to see if it seems to work properly, by running the script and checking in /tmp/cleanold.log that the correct files are candidates for deletion, and if you are happy edit the script again, and uncomment the 'find' line with the '-exec rm'.

That should be all.

[Jongky]

Thanks Maxxfi... I'll try this out ...