Tutorials Index Page 8


Steps to disable root login in phpMyAdmin

To disable root login in phpMyAdmin set AllowRoot to false like this example: $cfg['Servers'][$i]['AllowRoot'] = FALSE;. If you want more details check our tutorial.

How to Generate md5 checksum for all Files in a Directory

In this small tutorial we are going to explain how to calculate the md5 sum of all the files in a directory. Example find . -exec md5sum "{}" ; > md5sum_current_directory will save the md5 sums in the file called md5sum_current_directory. Check this article for more details


Introduction to MapReduce with MongoDB

MapReduce is a programming model and an associated implementation for processing and generating large data sets. In this tutorial we are going to explain how to use MapReduce with MongoDB and python. We explain how to use the MapReduce query and then with an example we show examples using pymongo en mongoengine.


Linux Coding style for coding in C

In this tutorial we are going to explain some C code style and why developers have to follow good practices. This is a very good beginner article.


Bash: How to Check if a directory exists?

If you need to check if directory exists use: if [ -d "$DIR" ];. Check here for details when you have symbolic links.


How to change MySQL root Password

In this tutorial we explain how to reset the password of root user in MySQL. We explain how to change it using mysqladmin and using queries. We also explain how to change root password when you forgot the previous password using mysql_safe command with --skip-grant-tables


How to install source code from tarball files on linux?

Usually you should use your package manager to install software in Linux, but sometimes you need to install software from source code. The most common steps are to execute: ./configure;make;make install. Check here for full details


Converting String to Int in Java?

With Java, you can use the Integer.parseInt(). Here we will show you how to use parseInt to convert a String into an integer using Java. You can also use valueOf. Remember that when the string is not a valid integer it will be thrown NumberFormatException. check here for more details.


How to compile and upload code to NodeMCU ESP8266

In this tutorial we are going to setup an arduino IDE to developer for the NodeMCU CP2102 ESP8266 ESP-12F with the LCD module. Here we will use a project that uses WiFi and we will show network activity on the LCD. Learn how to develop and upload code to this amazing board!. Check here for full details


JavaScript: How to know if and Object is empty?

In general there is now way to check is a javascript object is empty. We create a new function to verify if the object is empy. As an optional step we add it to the object prototype.