nixCraft Linux / UNIX Newsletter

I type 'find . -type d -iname foo -delete' command to find the foo directories and delete them. However, I am getting an error message that read as find: cannot delete './hourly.4/data/foo': Directory not empty on Linux server. How do delete directories based on find command output on Linux or Unix-like system?

How do I use Tinc to create a mesh network of two different VPN on the same server? Is it possible to create multiple VPN tunnels between two hosts using tinc VPN software?

A very serious security problem has been found in the Linux kernel called "The Stack Clash." It can be exploited by attackers to corrupt memory and execute arbitrary code. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative/root account privileges. How do I fix this problem on Linux?

I use ansible-playbook to update my VMs and bare metal servers hosted in a remote data center. How do I tell, whether the Ubuntu Linux server requires a reboot using the command line over ssh based session?