In this RHEL7 / CentOS7 tutorial we will take a look at how to setup a kvm virtualisation. We started by installing an OS on the main system, where we add a kvm installation. More »

In a previous tutorial we looked at how you can setup Wake on LAN (wol) on RHEL7 or CentOS7. In this tutorial we take another look at wol by adding a UDEV rule and systemd service, because the ETHTOOL_OPTS is deprecated. More »

In this Red Hat 7 tutorial we will take a look at how to subscribe to the Optional and Supplementary channels, and -devel packages using Red Hat Subscription Manager (RHSM). More »

In this CentOS 7 or Red Hat Enterprise Linux 7 tutorial we take a look at how to configure Wake on LAN (wol) and how to suspend or hibernate your system. Also how you can configure suspend and hibernate in Gnome3 that has these buttons disabled by default. Also take a look at the tutorial adding UDEV rule and systemd service for wake on LAN. More »

In this CentOS 7 or Red Hat Enterprise 7 Linux tutorial we take a look at firewalld, which is the new way of configuring a basic firewall. We will take a look at firewalld and firewall-cmd. More »

In this CentOS Linux version 7 or Red Hat Enterprise Linux version 7 tutorial we will take a look at the network service using command line options. We for instance look how to stop/start/restart or get the status of the network service.

From version 7 of RHEL (CentOS, Fedora, Scientific linux) systemd is used. It replaces Upstart as the default init system and can be used to control services (service and system manager) of the Linux operating system. More »

In this Linux CentOS 7 or Red Hat Enterprise 7 we will take a look at how to setup a development environment, with for instance gcc, make, rpm-build and so on. More »

In this Linux CentOS 7 or Red Hat Enterprise 7 we will take a look at Grub2 which is become the default boot loader on the previous mentioned distributions. We will configure a system to dual boot CentOS 7 and Windows 7. And we also look at grub2 in general, how it is setup. More »

In this Linux install tooling tutorial we will take a look how to create a bootable usb key with CentOS 6.5 (and higher) or CentOS 7. We have also add how to create a bootable CentOS 7 USB key from Mac OSX. More »

Unix and Linux treat data streams and peripherals device files as files. By default there are always three files open, stdin (keyboard), stdout (display) and stderr (error messages outputted on the screen). As with every open file, it is possible to redirected the three files. For instance you can redirect (capture) the output of a command, file, script and send it to another command, file or script as input. More »