The Linux ".d" approach

Many services on a Linux system use a *.d directory approach to make their configuration easily configurable by other services. This is a remarkably simple yet efficient method for exposing services towards other applications. Let's look into how this .d approach works.

Take a look at the /etc/pam.d …

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Capabilities, a short intro

Capabilities. You probably have heard of them already, but when you start developing SELinux policies, you'll notice that you come in closer contact with them than before. This is because SELinux, when applications want to do something "root-like", checks the capability of that application. Without SELinux, this either requires the …

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