How to generate Public Key from existing RSA Private Key
For the general cases, use: And for the SSH connections, use next: @source: https://www.openssl.org/docs/manmaster/man1/rsa.htmlhttps://stackoverflow.com/a/23413167/1565790
Category: System
How to fix server load caused by many CLOSE_WAIT connections on CentOS Linux
Sometimes, you might face a problem when you have a huge load on a server caused by an opened TCP connections which stay for a long time. Actually it happens when the application does not send proper close signal to the opened socket connection. It might be faulty issue or made intentionally.
How to fix Nginx service start error `(99: Cannot assign requested address)` on CentOS – Conflict with IPv6
Sometimes it might happens that, when you try to start Nginx on CentOS there might be an error such as:
How to prepare Local HTTPS Server via PHP built-in server using Stunnel on Windows
Sometimes, for a quick and very small project development we need a secure localhost connection.
How to install Tesseract from git source on CentOS 7 avoiding the error “configure: error: Leptonica 1.74 or higher is required.”
As you might know, from epel repository on CentOS 7 user is able to install tesseract 3.0.4 which also automatically installs leptonica 1.72. And if you want to install the higher or the latest version of tesseract you’ve to install both of them from source.
How to install & use multiple versions of PHP on Windows
Actually, this is a super easy.
How to check Linux version / distribution
There are several CLI commands to get the OS Linux info:
How to install ImageMagick for CentOS 7
At first, some prerequisite packages must be install before compiling the related php extension:
How to split media file into several parts and then merge them using Windows batch scripting
At first, we need ffmpeg package which could be downloaded from here: https://www.ffmpeg.org/
How to prepare any program for running in a background as a service on CentOS
In this post we will discuss how to use supervisor system built with python.