Automated conversion of Excel to PDF using LibreOffice

Read existing excel file.
Modify cell values of existing excel file.
Convert output of worksheet to PDF

Install Node.js

Run curl -sL https://deb.nodesource.com/setup_14.x | sudo bash -
Run sudo apt-get install gcc g++ make
Run sudo apt-get install -y nodejs
Run node --version
Run npm --version

Install LibreOffice

LibreOffice Installation Reference

Run command to add the PPA

Run sudo add-apt-repository ppa:libreoffice/ppa
Run sudo apt-get update
Run sudo apt-get install libreoffice

unoconv Installation

Universal Office Converter (unoconv)

Run sudo apt-get install -y unoconv
Run unoconv --version