Install PostgreSQL 10.5 on Fedora 28/27, CentOS/RHEL/SL 7.5/6.10

This is guide, howto install PostgreSQL 10.5 database server on Fedora 28/27/26, CentOS/Red Hat (RHEL)/Scientific Linux (SL) 7.5/6.10. This guide uses PostgreSQL own YUM repos, which are always up-to-date and stable releases are available instantly. Note: If you are upgrading PostgresSQL (from earlier version), then make sure that you backup (dump and copy) your database and configs. [inttf_post_ad1] 1. Install PostgreSQL 10.5 Database Server on Fedora 28/27/26, CentOS/Red Hat...

Install Memcached on Fedora 28/27, CentOS/RHEL 7.5/6.10

Memcached is a high-performance, distributed memory object caching system, generic in nature, but originally intended for use in speeding up dynamic web applications by alleviating database load. Memcached is a very useful also in other cases, than only dynamic web applications. This guide explains howto install Memcached 1.5.7/1.4.17/1.4.36 stable version of distributed memory object caching system on Fedora 28/27/26/25 and CentOS / Red Hat (RHEL) 7.5/6.10. Fedora 28/27/26/25, CentOS 7/6...

Apache Userdir with SELinux on Fedora 28/27, CentOS/RHEL 7.5/6.10

This is quick guide howto enable Apache userdirs with SELinux on Fedora 28/27/26/25, CentOS 7.5/6.10 and Red Hat (RHEL) 7.5/6.10. This guide assumes that you have Apache (httpd) server installed on your system. This guide uses separeted userdir.conf without touching httpd.conf so later default httpd.conf can be overrided or whole configuration moved simply. This guide uses user called testuser and should be replaced by real user name(s). [inttf_post_ad1] Enable Apache...

Install MariaDB 10.3 on Fedora 28/27, CentOS/RHEL 7.5/6.10

MariaDB is a binary drop in replacement for MySQL database server. This means that for most cases, you can just uninstall MySQL and install MariaDB and you are good to go. Why MariaDB? MariaDB is totally open source version of MySQL It works just like MySQL and is compatible with MySQL setups Fedora and Red Hat/CentOS is moving to use MariaDB from Fedora 19/RHEL 7/CentOS 7 versions [inttf_post_ad1] This is guide, howto install or upgrade MariaDB 10.3.9 [stable] or 10.2.17...

VirtualBox 5.2 on Fedora 28/27, CentOS/RHEL 7.5/6.10

Oracle VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. VirtualBox is a general-purpose full virtualizer for x86 hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. VirtualBox supports a large number of guest operating systems: [inttf_post_ad1] Windows 3.x Windows NT 4.0 Windows 2000 Windows XP Windows Server 2003 Windows...

Install SVN Server on Fedora 28/27, CentOS/RHEL 7.5/6.10

This is guide, howto install SVN (Subversion) server on Fedora 28/27/26, CentOS 7.5/6.10, Red Hat (RHEL) 7.5/6.10. What is SVN (Subversion)? Subversion is a free/open-source version control system. Subversion manages files and directories, and the changes made to them, over time. This allows you to recover older versions of your data, or examine the history of how your data changed. In this regard, many people think of a version control system as a sort of "time...

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...

Nginx and PHP-FPM Configuration and Optimizing Tips and Tricks

I wrote before a guide Howto install Nginx/PHP-FPM on Fedora 28/27, CentOS/RHEL 7.4/6.9, but this guide is just installation guide and many cases Nginx and PHP-FPM basic configuration is good enough, but if you want to squeeze all the juice out of your VPS or web server / servers and do your maintenance work little bit easier, then this guide might be useful. These tips are based entirely on my own experience, so they may not be an absolute truth, and in some situations, a completely different...

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...

Fedora 26 Netinstall / Server Install Guide

This is guide with screenshots, howto install Fedora 26 (F26) Server using Fedora Netinstall image. This same Fedora Netinstall method work for desktop installation too. Desktop is possible select Software Selection step. 1. Before Fedora 26 Installation 1.1 Download Fedora 26 Netinstall Image Download Fedora 23 here. Select Fedora 26 Netinstall image. On this guide I use server install image. 1.2 Burn Fedora 26 Image to CD/DVD, Create Live USB or use image directly and boot...

Upgrade Fedora 26 from Fedora 25 Using DNF (F25 to F26)

This is guide, howto upgrade Fedora 25 to Fedora 26 using DNF. This method work 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...

Linux: Get IP / IPv6 (internal/external) on Command Line/Shell

This is quick tip, howto get internal IP address and external IP address on Linux Shell / Command Line. This guide also show, howto make useful Bash functions to get IP addresses quickly. Note: All functions could be named as you wish and to make functions permanent, add functions to ~/.bashrc or /etc/bashrc. Also all awk commands should work also with gawk and nawk. [inttf_post_ad1] 1. Get Internal IP Address(es) on Linux Shell / Command Line 1.1 Get IP and IPv6 Address by...

Hide Apache ServerSignature / ServerTokens / PHP X-Powered-By

By default almost all Apache installation shows sensitive server information with Apache version number, server operating system details, installed Apache modules, PHP-version and so on. Attackers can use this information when performing attacks. Some examples howto check server information that Apache sends Error page Use lynx $ lynx -head -mime_header http://www.ubuntu.com HTTP/1.0 200 OK Date: Fri, 20 Nov 2009 09:25:46 GMT Server: Apache/2.2.8 (Ubuntu)...
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