Disregarding GUI you can always put your Linux system to sleep from command line. This is especially useful if you GUI breaks from some reason and becomes unresponsive to suspend command or you wish to suspend your system remotely. Suspend also known as sleep is a state where your system current running state is saved directly to RAM and remains dormant until awaken by some sort of wake up event such as pressing power button, opening laptop lid or mouse move.

Since RAM is a volatile memory and requires electrical power to hold data your system while in suspended state continues to use electrical power. To suspend/sleep your Redhat/Fedora system you can enter the following linux command:
rhel7~]$ systemctl suspend

KeePassX is a cross platform password manager to allow users to store and organize password and keep them safe using advanced encryption techniques. This guide describes how to install KeePassX password manager on Fedora Linux.

KeePassX Download

First download source code from the KeePassX official download page. Example:
$ wget http://www.keepassx.org/releases/keepassx-0.4.3.tar.gz

Installation Prerequisites

In the next step we are going to install all prerequisites in order to success fly compile KeePassX:
$ sudo yum install qt-devel qt-config gcc-c++ libXtst-devel

Compilation and Installation

At this point we are ready to decompress KeePassX. Please note your version maybe different:
$ tar xzf keepassx-0.4.3.tar.gz 
$ cd keepassx-0.4.3/
and compile using make:

In this tutorial we will describe how to install Virtualbox Guest additions on Fedora Linux virtual machine. The rule of thumb here is that the most recent Fedora Linux version requires up to date Vitualbox installation. Having said that, it is possible to install Virtualbox Guest additions for most recent Fedora Linux using outdated Virtualbox installation, however the process would not be that straight forward. Therefore, if possible, before you continue to read, see what version of Virtualbox you are running and compare it with the version found on the official Virtualbox website. The more recent VirtualBox version the less likely you are to run into X server version incompatibility and to get error:
"unknown X server version"
Apart of the updated Virtualbox version this guide also assumes functional Fedora Linux installation with working Internet connection. Lastly, the aim here is to provide a generic guide for Virtualbox Guest additions on Fedora Linux virtual machine and as a result reader needs to adjust some of the following linux commands to is your envireoment.

Step 1: Mount Guest additions

Start your Fedora virtual machine and mount Virtualbox Guest additions by navigating to Virtual box menu -> Devices -> Insert Guest Additions CD image The following message will pop up: installation of Virtualbox Guest additions - Fedora
Hit cancel and navigate to Virtualbox Guest additions mounted directory using your terminal:
# mount | grep -i vbox
/dev/sr0 on /run/media/fedora/VBOXADDITIONS_VERSION type iso9660
# cd /run/media/fedora/VBOXADDITIONS_VERSION
# ls
32Bit  AUTORUN.INF  cert  runasroot.sh            VBoxSolarisAdditions.pkg        VBoxWindowsAdditions.exe
64Bit  autorun.sh   OS2   VBoxLinuxAdditions.run  VBoxWindowsAdditions-amd64.exe  VBoxWindowsAdditions-x86.exe

By default a Fedora Linux does not support playing MP3 files. The same must then apply also for an Amarok music player. To enable MP3 support a user needs to install non-free codec. First add rmpfusion repositories:

NOTE: the command below will enable both free and non-free rmpfusion repositories

$ su -c 'yum localinstall --nogpgcheck \
http://download1.rpmfusion.org/free/fedora/rpmfusion-free-release-stable.noarch.rpm \
http://download1.rpmfusion.org/nonfree/fedora/rpmfusion-nonfree-release-stable.noarch.rpm'

Virtualbox installation on Fedora Linux This short howto will guide a Fedora user with a steps on howto install VirtualBox on a Fedora linux system.

System: Fedora 14 Laughlin , i386

Kernel: 2.6.35.6-48.fc14.i686

Virtualbox Version: 3.2.12 for Linux

First, become a root and install all required prerequisites:

# yum install SDL make automake autoconf gcc kernel-devel dkms

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