How to keep latest n backup

[armitage318]

Hi,
I use QNAP for backup of several workstations with Netbak utility on Windows.
Generally I use, on client PC, the option that save one full backup every day, so I have:

Code: Select all

[/share/MD0_DATA/User1/NetBakData] # ls -l User1
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 13 21:04 2019-10-13-22-00-00/
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 14 21:04 2019-10-14-22-00-00/
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 16 21:00 2019-10-16-22-00-00/

[/share/MD0_DATA/User2] # ls -l User2
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 14 00:59 2019-10-14-02-00-00/
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 15 00:59 2019-10-15-02-00-00/
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 16 00:59 2019-10-16-02-00-00/
drwxrwxrwx    3 COMPANY\ COMPANY\      4096 Oct 17 10:16 2019-10-17-11-00-00/

Previously, I ran a shell script that delete folder "older than specific day", but I would like a different solution to "delete old backup, but keep almost 3 of them".
Any help ?

Thank you!

[P3R]

I would use a better Windows backup application that have a versioning feature built in. It's usually available only in non-free backup software. Personally I would use Syncback SE or Pro based on the excellent experience I've had with Syncback Free ever since I gave up on NetBak many, many years ago.