Let’s encrypt SSL certificates are issued for 90 days by default. After 90 days, you need to renew your SSL certificate. You can renew your Let’s Encrypt SSL certificate before 30 days of expiration. Renewal can be done manually or…
Category: Linux/Unix
How to compress and extract files using tar command in Linux – Basic Example
Here is a quick example of how to compress and extract a tar files in linux operating system. We can see what are the available options we have got of tar command by doing: man tar or tar –help We…
Deploy React App on Ubuntu 22.04 LTS on Amazon EC2 instance
React, also known as React.js or ReactJS, is a free and open-source front-end JavaScript library for building user interfaces based on UI components. ReactJS is maintained by Meta (formerly Facebook) and a community of individual developers and companies. Some of…
How to Free Up Disk Space on Ubuntu and Linux Mint
Looking to free up disk space on your ubuntu server? This simple tutorial to save disk space can help you. If not managed wisely, the largest of disks may fill in no time and you might be looking for new…
How to add or remove cached git credentials on linux server (Ubuntu)
This is something I need to do occasionally, that is, to add or remove cached git credentials on a Linux server. To add when you need to set up a git repository for a new project on new server for…
How to Install and Switch between Multiple Python Versions on Mac
In this simple tutorial I will demonstrate to Install and Switch between Multiple Python Versions on Mac. Sometimes you want to use latest version for your new application while you may need a minimum version of python such as 2.7.*…
How to replace special characters in filenames to fix 404 not found issue in website running on nginx
It is recommended to not include special character in filenames, such as apostrophe(‘), double quote(“), percent(%) etc. Special characters in filenames of the files uploaded to a web server should be avoided for various reasons. It may cause unexpected behaviour,…
How to Install Let’s Encrypt (Certbot) on Ubuntu 20.04
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…
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…
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…