Certbot is a command line tool for managing Let’s Encrypt SSL certificates on Linux operating system. It may allow you to request install free SSL certificate on your website domain. It also performs the authorization and configure your web server…
Author: Arvind Kumar
How to change search highlight or selection colour in Sublime Text 3
Sublime Text 3 is very popular and widely used code editor. I have been using it for a while now and am quite enjoying it. The good thing is this that it is free to use, except, having a buy…
ec2-user, apache and WordPress user:group permissions on Amazon Linux 2
There is a very (in)famous permissions glitch or settings if you host your WordPress website on Amazon Linux instance. If you keep user:group permissions to default ec2-user:apache then you are able to login to sftp and download upload files just…
Searching array elements with regex in Mongodb collection
Mongodb works Javascript way. Every mongodb collection is a JSON object containing all kinds of Javascript objects such as boolean, arrays, objects and strings. In this example I am saving two different fields to my categories collection. searchableName – for…
Transfer files via ssh from your server to Dropbox
Server to Dropbox – Sometime it is tedious to download files from your server and then uploading to your dropbox via sync since it takes long time. In this post I will show you how you can quickly transfer files to…
Making new object property reactive in Vue.js
The link given below shows us the example of using mutations and actions and Vuex store https://www.telerik.com/blogs/so-what-actually-is-vue-set for simpler examples if you are not sure what they are. Problem: We have a “databases” array which is updated via mutation and…
How to Find Out Top Directories and Files (Disk Space) in Linux
As a Linux administrator, you must check time to time which files and folders are eating more disk space. It is very necessary to find the unnecessary junks and free up them from your hard disk to avoid overrunning the…
10 Useful du (Disk Usage) Commands to Find Disk Usage of Files and Directories
The Linux du (abbreviation of “Disk Usage”) is a standard Unix/Linux command which is used to check the disk usage of files and directories. The du command has many parameters that can be used to get the results in different…
How to prevent hotlinking on Nginx and Apache
Hotlinking is bad – It could be quite annoying and concerning when someone copies full link to a media source such as an image or video on your website and uses that link to embed an image or video on…
Simplest way to create and include a helper functions file in Laravel
Helper functions are time saving tools in any application. Laravel comes with many built-in useful PHP functions which may include Array & Objects functions, String functions, URL functions and many more. Please see the complete list before you decide to…