Category: Linux

Learn | Teach Open Source Technologies

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What is Linux?

From smartphones to cars, supercomputers and home appliances, the Linux operating system is everywhere. Linux. It’s been around since the mid ‘90s, and has since reached a user-base that spans industries and continents. For those in the know, you understand that Linux is actually everywhere. It’s in your phones, in your cars, in your refrigerators,…
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What is GRSecurity

Grsecurity® is an extensive security enhancement to the Linux kernel that defends against a wide range of security threats through intelligent access control, memory corruption-based exploit prevention, and a host of other system hardening that generally require no configuration. It has been actively developed and maintained for the past 15 years. Commercial support for grsecurity…
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Linux Family reached 99.4 % as Super Computer Operating System — Top500.org

According to https://www.top500.org/  in June 2016 Linux family has gained the usage up to 99.4 % as Operating System for Super Computing platform or HPCC.

How to configure ICINGA2 Monitoring server on CentOS / RHEL 7

Before we start to configure ICINGA2 we need to ensure that LAMP is installed on our machine. SELINUX Setup view /etc/selinux/config sed -i ‘s/SELINUX=enforcing/SELINUX=permissive/g’ /etc/selinux/config reboot

How to enable and use EPEL Repo in RedHat / CentOS Linux

Red Hat Enterprise Linux 7 / CentOS 7 rpm -ivh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm yum update