The latest Windows 8 and 8.1 systems have Windows Firewall and the Windows 10 and above systems use Windows Defender Firewall. This tutorial is created on Windows 8.1, so the screenshots may differ for Windows 10 and above users. Enable or Disable the Windows Firewall Use the below steps to enable or disable a firewall on a Windows system. Wrap Up Again we are advised to keep the firewall active on your system....
In this blog post, we will show you how to create DMARC records for your domain using DMARC.org’s free DMARC reporting tool. How to Create DMARC Record for Your Domain A DMARC record is a type of TXT record that helps to prevent email spoofing. To generate a DMARC record for your domain, you will need to create a TXT record on DNS with the following values: Details about the above record: You can also use some more options with the DMARC record as described below:...
Chromium is perfectly safe for using. Make sure to download it from a good source or official Google download page. Also make sure to update it on regular basis. If you are looking for the Chrome (Not chromium) web browser, You can use our tutorial to install Google chrome web browser on Ubuntu system. This tutorial will help you to install chromium web browser on Ubuntu 20.04. Install Chromium on Ubuntu Most of the modern operating systems have chromium browser in default package repositories....
MongoDB has released a new stable version 4.4 with lots of major enhancements. This tutorial will help you to install MongoDB 4.4 on Fedora Linux systems. Step 1 – Configure Repository The MongoDB official team provides an Yum repository for installing MongoDB on a Fedora system. Create a new configuration file with Mongodb yum repository. Edit a file in a editor: Add the below content Save the file and close it....
Netdata official team recommend to install netdata monitoring tool using the kickstart script. But this tutorial will help you to install Netdata on Ubuntu using default repositories. This tutorial describe you to how to install Netdata on Ubuntu 20.04 LTS Linux system. Prerequisites Login to your Ubuntu 20.04 LTS Linux system with sudo privileged account. Install Netdata on Ubuntu Ubuntu 20.04 default apt repositories contains Netdata Debian packages. You can install netdata on Ubuntu by running the following commands....
Features Supports MySQL, SQLite, PostgreSQL and IBM DB2. Monitor different system matrics including, Memory, CPU, Disk, Process. Monitor network devices, hardware, virtual machines, VMware hypervisor and VMware vCenter. Supports multiple authentication methods like, LDAP and Active Directory. Provide Notification through Email. Auto-discovery and automated metric collections. Distributed monitoring. In this tutorial, we will explain how to install and configure the Zabbix monitoring server on CentOS 8 and RHEL 8. Step 1 – Disable SELinux By default, SELinux is enabled in CentOS 8....
In this tutorial, you will learn to move a directory from a Git repository to a new Git repository. Move Directory to a New Git Repository Follow the below steps to move a folder from an existing repository to a new repository. Congratulations, You have successfully copied a directory to a new Git repository. SUB_DIRECTORY_NAME: The relative path to the directory within the project files, you need to separate from others....
Step 1 – Generate .htpasswd File If you have shell access, you can generate a .htpasswd file using the command line. First, create the directory structure where you want to place this file. It will good to put this file outside of document root. Now use the following command to create the first user in .htpasswd. cPanel users can use their dashboard to generate this file. If you don’t have shell access, you can use online htpasswd generator it and put on your server....
This tutorial will help you to prevent image hotlinking on Apache using .htaccess. Prevent Image Hot Linking Create a .htaccess file under the document root of your website. Then add the following rules to the created .htaccess file. This will block all domains except example.com from hotlink images from your site. The above in .htaccess code will prevent other domains from linking images from your website. You can also show a blocked banner in place of the hot-linked image....
Remove JavaScript Object Property For this example, we have created an object with some default values. Now, use the delete operator to delete the specific property from the JavaScript object. Similarly, you can also use the following syntax with the delete operator. Example to Remove JavaScript Object Property Below is a working example of removing the property from a javascript object. Add below content in an HTML file and access it in a web browser....
Syntax: Replace String in JavaScript with Examples In this tutorial, we will discuss a few examples of replacing strings in Javascript. Let’s try some examples: Here is the first example to initialize a text in a variable, then replace it with another text. let str = “Hello World!” let result = str.replace(“World”, “TecAdmin”) console.log(result)1234let str = “Hello World!“let result = str.replace(“World”, “TecAdmin”) console.log(result)Run the above example and see the results....
All the Linux command line users must be aware about uses of Linux find command. It The find command traverse under a directory tree and capable to search files or directory based on defined search pattern. It also provides option to search files with names in uppercase or lowercase or mixed case. In this tutorial you will learn about how to search files with case insensitive names. Find files with Case Insensitive Names Use -name command line option followed by the file name under a directory tree....
Setup git username for a single repository Open Terminal and use the following commands to set Git username and email address for your current git repository. Set a Git username: Set a Git email: Setup git username for all repositories Use –global option to set username and email globally on system. Open a terminal and use the following commands to set Git username and email address for all the git repository on the system....
Prerequisites This tutorial assumes that you have a running Ubuntu 16.10 system. Also, assumes you have shell access of system with sudo privileges. Step 1. Perform Backups We strongly recommended to backup all your important data from your Desktop to a remote location. Also preferred to take a complete system snapshot if possible. Step 2. Upgrade to Ubuntu 17.04 Before upgrading to Zesty Zapus, upgrade your current release packages to latest....
The curl command line utility is a powerful tool for making HTTP requests. It can be used to send a variety of different HTTP requests, including POST requests with a JSON body. Here’s how you can use curl to send a POST request with a JSON body: Create a JSON fileCreate a JSON file that contains the data you want to send in the request body. For example, let’s say you have a file named data....
Pre-Requisiteis Shell Script for Sending Emails via SMTP In the above script, the Mailcontent.txt file contains the mail body content. Conclusion
Read this=> How to Install Java 8 on CentOS, Red Hat & Fedora Read this=> How to Install Java 8 on Ubuntu & Linuxmint The language was designed incorporating these properties: Platform independent- The Program makes use of the Java virtual machine as abstraction and do not access the operating system on the direct basis. Which makes Java programs highly portable. Object-oriented programming- Apart from primitive data types, all elements in Java can be considered as objects....
The Docker treats each line as comment begin with hash (#) sign, unless the line is a valid directive. The # marker must be the first character of of line be make it comments, anywhere else in a line is treated as an argument. The commends can use used as: In the above example # is placed at the beginning of the line. Any where the # symbol in line is used as an arguments....
Append Element to Array in JavaScript First, create an array in JavaScript. For example, we are creating an array games with two elements “chess” and “football”. Now append two more elements “tennis” an “pool” in games array using push() method. This method returns the number of element in array after adding new elements. Finally you can print the elements of array using console.log() function. You can also check the number of elements by printing total variable value....
How to Delete a File on Git – Repository and Filesystem Git command for file deletion is pretty much similar to the command that is being used on all Unix distributions. Each time you delete a file on git, you have to commit and push your changes. We’ll show you how to do that in the example below. First and foremost, let’s remove the file. The output will look like the one below....
