Tutorials
Step-by-step technical guides on Docker, Linux, Python, Go, and more.
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SQL: INNER JOIN vs OUTER JOIN Explained
For beginners when learning JOIN it's a common error to ignore different types of JOIN. Some junior developers could use a wrong JOIN that looks like correct when it's not the case. Make sure you learn differences between LEFT JOIN and RIGHT JOIN
How to check if an element is hidden in jQuery?
To check if an element is hidden use: $(element).is(":visible");
How can I concatenate strings in Bash?
Check here some string concatenation examples using bash. Lean how to program bash and manipulate strings, in this case using concatenation. We propose different approaches to solve the problem with bash.
How to Call an external command with Python?
We show how to use python to call an external program or command. We show examples with python 2 and 3
Windows Batch: Shutdown, Restart & Logoff Commands
Complete guide to Windows shutdown commands in batch files. Learn shutdown /s, /r, /h, /l, remote shutdown, scheduled tasks, and PowerShell alternatives.
How to include a JavaScript file in another JavaScript file?
In most programming lenguages is very common to include functions or classes from another file. In javascript seems to be different while handling includes, here we review how to do require or import files with javascript.
Javascript: How to set/get current URL?
Learn how to change the current url using javascript. Also learn how to get the current URL. We will explain the location object with more details, this object allows to change the query, hostname, port and more without parsing the url.
JavaScript Links: # vs javascript:void(0)
In this article we explain the differences of using "#" or "javascript:void(0)" in the href attribute. We warn you that for modern javascript you should avoid using this values in the href since it's a bad practice.
How to overwrite local files while doing "git pull"?
In this tutorial we are going to explain how to force a git pull when there are untracked files that will be overwritten. This tutorial solved the error: Untracked working tree file 'public/images/icon.gif' would be overwritten by merge.
How to use Kali linux Through Tor with Whonix Gateway
In this tutorial we explain how to use Whonix Gateway as a tor router. You can use any machine even a virtual machine through the gateway. All requests will be done through the Whonix gateway.