Tutorials

Step-by-step technical guides on Docker, Linux, Python, Go, and more.

Page 29 of 36

osx
3 min readBeginner

How to fix kernel_task CPU usage on High Sierra (OSX)

We explain how to solve when kernel_task is using too much cpu like 100% or it has high cpu time. In this tutorial we will fix high cpu usage on OSX MacBook Pro and others after high sierra update. Make sure you removed all usb devices!

javascript arrays loops foreach iteration
3 min readBeginner

How to iterate an array in javascript? (the proper way)

In this tutorial we are going to explain how to loop through all the objects in an array using JavaScript.

java random integer
2 min readBeginner

Java: How to Generate random integers in a range

In this tutorial we will explain how to generate a random numbers between a range using different java versions and methods.

nginx
5 min readIntermediate

How to configure WPA2 enterprise on linux LEDE

Steps to configure WPA2 enterprise (802.1x) on linux lede. This will add the ability to have individual usernames and passwords. This will add more security to your WiFi.

html button hyperlink htmlbutton
2 min readBeginner

How to create an HTML button that acts like a link?

When using only HTML, you have to use `

`. For Javascript use onclick event. With boostrap use the btn class. With plain CSS use the appearance: button; property. If you want to see more details read the full tutorial!
html css alignment
2 min readBeginner

CSS Lesson: Horizontally center a div in a div

Learn how to center a div within a div using flex, css2 and css3. We preset multiple solutions to solved this problem and with cross browser compatibility.

git git-branch git-remote
2 min readBeginner

How to delete a Git branch and tags locally and remotely?

Learn how to use git to delete local and remote branchs. We also include how to delete tags.

checkbox javascript jquery
2 min readBeginner

jQuery: get a checkbox value using jQuery

We explain how to get the value of the checked property in an HTML checkbox and then trigger an action based on the value. We recommend to use $('#conditions').prop('checked') when using jQuery 1.6+. If you want to set the checkbox value use: $("#conditions").attr("checked",true);. For Using the jquery toggle to a checkbox use $("#conditions").toggle(this.checked);`

javascript jquery redirect
2 min readIntermediate

How to redirect to another page using jQuery

Learn how to redirect to another page using javascript the correct way. You don't need to use jQuery to do the redirect. Check here the proper way to do a jquery redirect using just the window.location.replace("http://tutorials.technology"), white will avoid the back button infinite redirect. Check this tutorial for more details.

java collections map initialization
1 min readIntermediate

How to directly initialize a HashMap (in a literal way)?

How to initialize a Java HashMap with curly brackets notation. Learn here some alternatives.