Security-Enhanced Linux (SELinux) is a security architecture for Linux® systems that allows administrators to have more control over who can access the system. It was originally developed by the United States National Security Agency (NSA) as a series of patches to the Linux kernel using Linux Security Modules (LSM). Security Enhanced Linux (SELinux) provides an…
Postfix is a popular open-source mail transfer agent (MTA) that routes and delivers email. Occasionally, as part of the administration of this service, users will view, flush, and purge Postfix mail queues. These actions facilitate the manipulation of email delivery, enabling message reprioritization and/or cancellation. Such actions are often taken when messages are deferred or…
The load average is the average system load on a Linux server for a defined period of time. In other words, it is the CPU demand of a server that includes sum of the running and the waiting threads. In this article, we will share 4 ways to check the load average in Linux. What…