Fedora Switch Display Manager – GDM/SDDM/LXDM/LightDM/KDM/XDM

Display manager is a graphical login manager which starts a session, simply asks username and password to login desktop. This is guide howto switch/change display manager easily on Fedora 29/28/27. On Fedora you can choose example GDM (Gnome Display Manager), SDDM (Simple Desktop Display Manager), LXDM (LXDE Display Manager), LightDM, KDM (KDE Display Manager), XDM (X Display Manager). Run this guide commands as root user or using sudo. [inttf_post_ad1] 1. Howto Switch Display Manager on...

Install Skype 8.33 on Fedora 29/28, CentOS/RHEL/SL 7.5

This is guide, howto install Skype 8.33 on Fedora 29/28/27/26 on CentOS/Red Hat (RHEL)/Scientific Linux (SL) 7.5. This is actually easy process, I updated this guide and use Skype own RPM package, because it's currently only way the install Skype. Skype 4.3 and older versions are outdated after July 1. 2017. Notice From Skype download page: Important notice: All Skype for Linux clients version 4.3 and older will be retired on July 1, 2017. To keep chatting, please install the latest version...

VirtualBox Guest Additions on Fedora 29/28, CentOS/RHEL 7.5/6.10/5.11

This is guide, howto install Oracle VirtualBox Guest Additions on Fedora, CentOS and Red Hat (RHEL). This guide should work with Fedora 29/28/27/26/25/24/23/22/21/20/19/18, CentOS 7.5/6.10/5.11, Red Hat (RHEL) 7.5/6.10/5.11. VirtualBox Guest Additions is special software that can be installed inside Linux virtual machines to improve performance and make integration much more seamless. Among the features provided by these VirtualBox Guest Additions are mouse pointer integration and arbitrary...

Adobe Flash Player 31 on Fedora 29/28, CentOS/RHEL 7.5/6.10

This is guide, howto install Adobe Flash Player Plugin version 31 (32-bit and 64-bit) with YUM/DNF on Fedora 29/28/27/26/25, CentOS 7.5/6.10 and Red Hat (RHEL) 7.5/6.10. Using Adobe's own YUM repository it is very easy also keep up-to-date with Flash Player Plugin. Finally up-to-date Adobe Flash Player is available for Linux users. [inttf_post_ad1] 1. Change Root User sudo -i ## OR ## su - 2. Install Adobe YUM Repository RPM package ## Adobe Repository 32-bit x86 ## rpm -ivh...

cURL: Check Nginx/Apache Compression (br, gzip, deflate) is Working

This is a quick method to check with using cURL that Nginx/Apache (or any other web server) compression with Nginx ngx_http_gzip_module (gzip), Nginx google/ngx_brotli (br), Apache mod_brotli (br), Apache mod_gzip (gzip) and Apache mod_deflate (deflate) is working. Only the remote server headers are needed. Check that the Nginx/Apache Compression is Working [inttf_post_ad1] Get headers curl -s -I -H 'Accept-Encoding: br,gzip,deflate' https://www.if-not-true-then-false.com -s option...

YUM/DNF Remove Old Kernels on Fedora/CentOS/RHEL

This is quick guide howto delete/remove/clean old kernels on Fedora 28/27/26, CentOS 7.5/6.10, Red Hat (RHEL) 7.5/6.10. I use here two kernel as example, if you want to keep other more or less, then adjust amount of installed kernels as you wish. Normally reason why you maybe want remove kernels is limited disk space, example on VPS servers and laptop. This is very easy task. [inttf_post_ad1] 1. Check Installed Kernels and All Kernel Packages rpm -qa kernel\* |sort...

YUM/DNF Remove Repo – YUM/DNF Disable Repository

Quick guide, howto remove and disable YUM/DNF repo (repository). Yum/DNF command itself does not contain any way to remove the repository. YUM and DNF repo files are located in /etc/yum.repos.d/ directory. [inttf_post_ad1] I use skype-stable.repo file with following content as example on this guide: [skype-stable] name=skype (stable) baseurl=https://repo.skype.com/rpm/stable/ enabled=1 gpgcheck=1 gpgkey=https://repo.skype.com/data/SKYPE-GPG-KEY Remove YUM/DNF Repo...

CentOS 7.5 Netinstall Guide – Network Installation Screenshots

This step-by-step walkthrough with screenshots, howto install CentOS (The Community ENTerprise Operating System) 7.5 Linux with Network installation (NetInstall). CentOS 7.5 is released and it brings all Red Hat (RHEL) 7.5 goodness to all CentOS 7.5 users. Want just CentOS 7.5 Netinstall mirror URL? Goto CentOS 7.5 Netinstall URL [inttf_post_ad1] 1. Download CentOS 7.5 Net Install (NetInstall) image Select mirror here: CentOS 7.5 x86_64 version Select ISO...

CentOS 6.10 Netinstall Guide – Network Installation Screenshots

Looking for CentOS 7 NetInstall Guide? This step-by-step walkthrough with screenshots, howto install CentOS (The Community ENTerprise Operating System) 6.10 Linux with Network installation (NetInstall). CentOS 6.10 is released and it brings all Red Hat (RHEL) 6.10 goodnes to all users CentOS 6 users. Have fun! [inttf_post_ad1] Want just CentOS 6.10 Netinstall mirror URL? Goto CentOS 6.10 Netinstall URL 1. Download CentOS 6.10 Net Install (NetInstall) image Select mirror...

LAMP on Fedora 28/27, CentOS/Red Hat (RHEL) 7.5/6.10

LAMP (Linux, Apache, MariaDB/MySQL, PHP) server is very powerful server setup behind any website or web based service. This guide is collection of Fedora/CentOS/Red Hat (RHEL), Apache, MariaDB/MySQL and PHP install guides. Today the Internet is full of instructions, which promises a LAMP server installation with a "One-Liner", and so forth. In fact, these "One-Liner" instructions assume that, Linux is already installed and installs just AMP (Apache, MariaDB/MySQL, PHP) pakages, without any...

Nano Text Editor and nanorc Tips and Tricks

Nano is easy to use and lightweight command line text editor for Linux and UNIX systems. Nano text editor can use either the default settings or improve settings with customized nanorc-file. Here are some tips that can improve the usability of Nano. Changes can be made to nanorc file, either locally or to all users or options can be used as command line options. First is good to check Nano compiled options, with command: nano -V Nano should be compiled with --enable-nanorc...

Upgrade Fedora 28 from Fedora 27 Using DNF (F27 to F28)

This is guide, howto upgrade Fedora 27 to Fedora 28 using DNF. This method works on desktop and server machines. I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade! 1. Before Upgrade 1.1 Backup Your Data Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important step, because if...

Fedora 28 Workstation Install Guide

This is guide with screenshots, howto install Fedora 28 (F28) using Live DVD or Live USB. Fedora 28 Installation can be done also with using Fedora NetInstall (Net Install) with gPXE and BFO (boot.fedoraproject.org). 1. Before Fedora 28 Installation 1.1 Download Fedora 28 Live DVD/USB Image Download Fedora 28 here. Select your version, Fedora 28 Workstation, (Fedora 28 Server). On this guide I use Fedora 28 Workstation 64-bit. 1.2 Burn Fedora 28 Image to DVD, Create Live USB...

Quit Bash Shell Without Saving Bash History (5 Methods)

Sometimes it is very useful to delete / remove Bash history partially or completely when log out. Here is my favourite methods howto log out / quit / exit Bash shell without saving Bash history. Remove Only Current Session Bash History and Leave Older History Untouched [inttf_post_ad1] 1. Quit Bash Shell Without Saving History: Unset HISTFILE unset HISTFILE && exit 2. Quit Bash Shell Without Saving History: Kill Console kill -9 $$ Remove/Delete Bash History...

Upgrade Fedora 27 from Fedora 26 Using DNF (F26 to F27)

This is guide, howto upgrade Fedora 26 to Fedora 27 using DNF. This method works on desktop and server machines. I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade! 1. Before Upgrade 1.1 Backup Your Data Before doing anything, do full system backup or backup at least your important data: documents, pictures, videos, config files, log files, databases etc. This is very important step, because if...

Fedora 27 Workstation Install Guide

This is guide with screenshots, howto install Fedora 27 (F27) using Live DVD or Live USB. Fedora 27 Installation can be done also with using Fedora NetInstall (Net Install) with gPXE and BFO (boot.fedoraproject.org). 1. Before Fedora 27 Installation 1.1 Download Fedora 27 Live DVD/USB Image Download Fedora 27 here. Select your version, Fedora 27 Workstation, (Fedora 27 Server). On this guide I use Fedora 27 Workstation 64-bit. 1.2 Burn Fedora 27 Image to DVD, Create Live USB...

GRUB2 runlevel 3 – Howto Change runlevel on GRUB2

This is quick guide howto change runlevel on GRUB2. Title says runlevel 3 (refer to changing runlevel from 5 to 3), but yes same method of course works, if you want to change runlevel from 3 to 5, from 5 to 1 or from 3 to 1. Whole process is actually add one additional boot parameter. This modification is not permanent, when you boot your system next time, it uses default parameters. This guide works all Linux distributions with GRUB2. Runlevels 0 - Halt Shuts down the system. 1 -...

DNF/YUM Autocomplete (package names/commands) on Fedora/CentOS/RHEL

This is quick tip, howto use Bash auto complete (autocomplete) with DNF/YUM (package names/commands) on Fedora, CentOS, Red Hat (RHEL). Dnf package manager is used on Fedora 26/25/24/23/22 and Yum package manager is used on Fedora 21/20/19/18, CentOS 7.3/6.9 and Red Hat (RHEL) 7.3/6.9. Autocomplete feature is familiar to many who have used the Debian based Linux, like Debian and Ubuntu. For some reason, this feature is not automatically activated/installed on Red Hat -based Linux distros,...

Show Linux Version, Distribution (Distro), System Information

This is quick guide howto show Linux version, howto show Linux distributin (distro) info, howto show Linux System information, kernel version and kernel information on command line. Show Linux Version Linux version information can be checked using the following commands: cat /proc/version Another way to check Linux Version information is following: dmesg | grep "Linux version" Example output: Linux version 4.11.10-300.fc26.x86_64...
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