how to udpate a web app through linux command line code example

Example 1: how to run a update comand in linux

sudo apt update && sudo apt upgrade -y
#or use it seperately
sudo apt update
sudo apt upgrade
#you make wanna run below command to remove unwanted
#and free up some space
sudo apt autoremove

Example 2: update software in ubuntu

# Upgrades all applications
sudo apt-get upgrade