This is quick guide howto remove unwanted UEFI entries on Linux using efibootmgr.
Sometimes just efibootmgr commands are enough to remove UEFI entries, but some UEFIs need EFI System partition modifications or all UEFI entries are regenerated on reboot.
Check video guide howto delete UEFI boot entries:
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This is quick guide howto change runlevel on GRUB2.
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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...
This is quick guide / tour howto install Fedora 33 Server on real PC using NetInstall ISO. First download your NetInstall image from (https://alt.fedoraproject.org/), then create your bootable USB flash drive using Fedora Media Writer, dd or similar tool.
You can use this method to install server or minimal version Fedora 33 or any Desktop Spin too. Like Workstation (Gnome), KDE Plasma Desktop, Xfce Desktop, LXQt desktop environment, Mate-Compiz Desktop, Cinnamon Desktop, LXDE Desktop and...
This is guide, howto install Skype 8.69 on Fedora 34/33/32/31 on CentOS/Red Hat (RHEL)/Scientific Linux (SL) 8.3/7.8. 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 Skype 4.3 and older versions are outdated after July 1. 2017.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...
This is guide, howto upgrade Fedora 32 to Fedora 33 using DNF. This method works on desktop and server machines. You can also upgrade older Fedora installations (example Fedora 31/30/29) directly to Fedora 33.
I have tested this method on several machines, but if you have problems, please let me know. Always remember backup, before upgrade!
Check video version of guide:
1. Before Upgrade
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1.1 Backup Your Data
Before doing anything, do full system backup or...
This is quick guide howto create Windows 10 install media / bootable USB flash drive on Linux. I use here Fedora Linux, but same method works on Ubuntu, Arch, Gentoo or any other Linux too.
Reason why this guide exist is that the latest Windows 10 image Win10_2004_English_x64.iso (May 2020 update) install.wim file is too big to fit on Fat32 file system 4 Gb file size limit. Yes I know that you can use NTFS, but systems with older UEFI/BIOS won't boot NTFS formatted USB flash drives, so it's...
This is quick guide howto install Fedora 32 Desktop on real pc. First create your bootable USB flash drive using Fedora Media Writer, dd or similar tool.
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This is guide, howto install or update Opera 72.0.3815.148 browser on Fedora, CentOS and Red Hat (RHEL). This works on Fedora 33/32/31, CentOS 8.2/7.8 and Red Hat (RHEL) 8.2/7.8.
Check Opera Browser features >>
Check video version of guide:
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1. Change Root User
sudo -i
## OR ##
su -
2. Install Opera Browser 72 on Fedora, CentOS and Red Hat (RHEL)
2.1 Create Opera...
This is quick guide / tour howto install Fedora 33 Workstation / Desktop on real PC. First create your bootable USB flash drive using Fedora Media Writer, dd or similar tool.
Just testing stable Fedora 33 release and everything works very smooth, even btrfs file system, which replaces ext4 as a default file system.
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This is guide, howto install Adobe Flash Player Plugin version 32 (32-bit and 64-bit) with YUM/DNF on Fedora 32/31/30/29, CentOS 8.0/7.7/6.10 and Red Hat (RHEL) 8.0/7.7/6.10. Currently only Firefox is supported and you need firefox-x11 launcher or fallback to x11. Wayland and Google Chrome/Chromium is not supported anymore.
Install Adobe Flash Player Plugin 32 Fedora 32/31/30/29, CentOS 8.0/7.7/6.10 and Red Hat (RHEL) 8.0/7.7/6.10
1. Change Root User
sudo -i
## OR ##
su -
2....
This is a very common PHP question, how to remove last character from string in PHP?
So here are three ways how to delete last character from string in PHP.
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Method 1 - PHP: Remove Last Character from String using substr and mb_substr
substr and mb_substr commands usage
substr($string, 0, -1);
mb_substr($string, 0, -1);
substr and mb_substr example:
$string = "This is test string..";
echo $string . "\n";
// substr function
echo "substr: " ....
This is guide with screenshots, howto install Fedora 31 (F31) Desktop using Fedora Netinstall image. This same Fedora Netinstall method works for Fedora server installation too. Server or minimal install is possible select Software Selection step.
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1. Before Fedora 31 Installation
1.1 Download Fedora 31 Netinstall Image
Download Fedora 31 here.
Select Fedora 31 Netinstall image. In this guide I use desktop install image. You can of course use Server install image...
This is guide, howto install SVN (Subversion) server on Fedora 31/30/29/28, CentOS 8.0/7.7/6.10, Red Hat (RHEL) 8.0/7.7/6.10.
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...
This is quick guide howto enable Apache userdirs with SELinux on Fedora 31/30/29/28, CentOS 8.0/7.7/6.10 and Red Hat (RHEL) 8.0/7.7/6.10. 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).
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Enable Apache...
This step-by-step walkthrough with screenshots, howto install CentOS (The Community ENTerprise Operating System) 7.7 Linux with Network installation (NetInstall).
CentOS 7.7 is released and it brings all Red Hat (RHEL) 7.7 goodness to all CentOS 7.7 users.
Want just CentOS 7.7 Netinstall mirror URL?
Goto CentOS 7.7 Netinstall URL
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1. Download CentOS 7.7 Net Install (NetInstall) image
Select mirror here:
CentOS 7.7 x86_64 version
Select ISO...
This is guide with screenshots, howto install Fedora 30 (F30) 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 30 Installation
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1.1 Download Fedora 30 Netinstall Image
Download Fedora 30 here.
Select Fedora 30 Netinstall image. On this guide I use server install image.
1.2 Burn Fedora 30 Image to CD/DVD, Create Live USB or use image...
This is guide with screenshots, howto install Fedora 29 (F29) 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 29 Installation
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1.1 Download Fedora 29 Netinstall Image
Download Fedora 29 here.
Select Fedora 29 Netinstall image. On this guide I use server install image.
1.2 Burn Fedora 29 Image to CD/DVD, Create Live USB or use image...
This is Red Hat 8 RHEL (Red Hat Enterprise Linux) installation guide, step-by-step walkthrough with screenshots. Current version of Red Hat 8 is Beta.
The Red Hat Enterprise Linux 8 is available for the following architectures
Intel/AMD 64-bit
IBM Power little endian
IBM z Systems
ARM 64-bit
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On this guide I use Anaconda Graphical Installer.
1. Before Red Hat (RHEL) 8 Installation
1.1 Download Red Hat (RHEL) 8 DVD ISO Image
Select your architecture...
This is guide, howto to install LibreOffice 6.1.3 (or LibreOffice 6.0.7) on Fedora 29/28/27, CentOS 7.5 and Red Hat (RHEL) 7.5 using LibreOffice's original RPM packages. This guide's idea is offer one method to all LibreOffice versions and also one method to all Fedora 29/28/27, CentOS/Red Hat (RHEL) 7.5 users.
1. Download LibreOffice 6.1.3/6.0.7 Linux Package
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LibreOffice 6.1.3 64-bit version
wget...
I wrote before a guide Howto install Nginx/PHP-FPM on Fedora 29/28, CentOS/RHEL 7.5/6.10, 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...
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