David Cao

David Cao

David is a Cloud & DevOps Enthusiast. He has years of experience as a Linux engineer. He had working experience in AMD, EMC. He likes Linux, Python, bash, and more. He is a technical blogger and a Software Engineer. He enjoys sharing his learning and contributing to open-source.

5 Ways to Fix SSL_ERROR_SYSCALL

SSL_ERROR_SYSCALL typically occurs when the server side is using an SSL certificate to authenticate. This article covers how to fix SSL_ERROR_SYSCALL error in 5 ways. SSL_ERROR_SYSCALL Error $ git clone fatal: unable to access ‘/’: LibreSSL SSL_connect: SSL_ERROR_SYSCALL in connection…

3 Ways to fix SSH Too many authentication failures

“Too many authentication failures” is an error message that can occur when trying to connect to an SSH server. It indicates that the client has attempted to authenticate with the server using too many incorrect authentication methods or keys, exceeding…

10 Useful Python For Loop Examples

A Python for loop is a set of instructions that is repeated, or iterated, for every value in a sequence. Sometimes for-loops are referred to as definite loops because they have a predefined beginning and end as bounded by the…

3 Ways to Check Python Version in Linux

How to get the Python version on Linux is a commonly asked question during a Linux job interview. In this article, we will cover 3 ways to find the Python version in Linux. We will learn how to check the…

3 Ways to check Python 3 Version

In this article, we will cover how to check the python version in 3 ways. 3 Ways to check Python Version Commands Example Output python3 –version or python3 -V or python3 -VV Python 3.7.2 import sys sys.version 3.7.2 (tags: 9a3ffc0492,…

4 Ways to check Ubuntu Version

Recently we got some questions from readers about how to check the Ubuntu version.   Ubuntu is an open-source operating system. There are a few ways to check which version of Ubuntu you are running. In this article, we will mostly…

10 Linux tcpdump examples

Ever felt like your computer is a black box, constantly sending and receiving data without you having a clue what’s going on? You send an email, visit a website, or stream a video, and poof – magic happens. But what…