
apt error after MariaDB to MySQL change
I have install MariaDB on a Ubuntu 16.04 server. Then installed Virtualmin, that require MySQL, so it removed MariaDB and

upload
uppy Open Source upload progress bar. https://uppy.io

SASL authentication no mechanism available
When sending email from postfix mail sever that use mailgun for relaying mails, i get error Jan 4 03:16:06 serverok-vm

apt show
apt show command shows information about a package. See apt policy apt

apt policy
apt policy command show information about a package. It shows the installed version “Installed: 2.4.18-2ubuntu3.5” and the repo from where

geoip
PHP Script to Find GeoIP info Install GeoIP Apache Module in CentOS Install GeoIP PHP Module in Ubuntu Country Blocking

PHP Script to Find GeoIP info
If you have PHP GeoIP module installed, you can use the following PHP script to find GeoIP info. Or you

Virtualmin Hosting Control Panel
To install Virtualmin on Ubuntu, run Virtualmin Downloading PHP file Install SSL Certificate in Virtualmin Change PHP version in Virtualmin

Enable PHP Error Reporting
To enable PHP error reporting in scripts, add To avoid PHP scripts showing errors, add See php

Amazon AWS Elastic Beanstalk Command Line Interface
To install Amazon AWS Elastic Beanstalk Command Line Interface (EB CLI), run To create a project. To create servers in

Enable LetsEncrypt SSL in ISPConfig
Login to ISPConfig at https://your-server-ip:8080 On main menu, click on “Sites”. It will show all available web sites on your

Install tmux on CentOS 6
tmux is a terminal emulator. It work like screen, but have more features. CentOS 6 do not come with tmux,