UBUNTU

While connecting to the server using command ssh user@hostname / ssh user@ipaddress in command prompt (Terminal) you may get some issue like ssh: connect to host @hostname port 22: Connection timed out. Such issue may occur, either your server is down or there is problem with the firewall connection. Fix Issue, ssh: connect to host

While upgrading your computer’s software or installing any new software using the command line in Linux you may get pop-ups like Daemons using outdated libraries Which services should be restarted? Till now I have had such issues with two different systems. I have shown it below. Use the following command in the command Line (Terminal).

UFW (uncomplicated firewall) is a frontend for managing firewall rules in Linux. UFW is available by default in all Ubuntu installations after 8.04 LTS. While setting up firewall or configuring UFW for apache or NGINX etc, you may get the return Status: inactive for the command sudo ufw status. In this tutorial, you will learn

Nginx (engine-ex) is an open-source web server. It was originally created by Igor Sysoev in October 2004. Install Nginx on Ubuntu 22.04 sudo apt update sudo apt install nginx nginx -v Check Nginx Status on Ubuntu sudo systemctl status nginx Configure Firewall for NGINX in Ubuntu sudo ufw app list sudo ufw allow ‘Nginx full’

sudo service mysql stop sudo apt-get remove –purge mysql-server mysql-client mysql-common -y sudo apt autoremove ls /etc/mysql ls /var/lib/mysql sudo rm -rf /etc/mysql sudo rm -rf /var/lib/mysql sudo rm -r /var/log/mysql

While setting MySQL password for root user during MySQL installation in ubuntu, you may get an error. In this tutorial you will learn, How to Solve / Fix the MySQL root password setup error in ubuntu? … Failed! Error: SET PASSWORD has no significance for user ‘root’@’localhost’ as the authentication method used doesn’t store authentication

sudo apt update sudo add-apt-repository ppa:deadsnakes/ppa sudo apt install python3.10 python3 -V

sudo apt update java -version sudo apt install default-jre java -version Installing Java 8 sudo apt install openjdk-8-jre Oracle Java sudo apt install software-properties-common sudo add-apt-repository ppa:linuxuprising/java sudo apt update