Disclaimer: This gist is a bit outdated now. The client download page now redirects to a login page that the downloads are guarded behind. You'll want to do a web search for a pulse secure deb file and install that now. Try: http://webdev.web3.technion.ac.il/docs/cis/public/ssl-vpn/ps-pulse-ubuntu-debian.deb. When I installed Pulse Secure 9.1R13, I didn't need to do anything else to get it working.
9.1R13 download: https://drive.google.com/file/d/1xfXsg9aNISAtWUgfVmAWKd_8FE2I_Mbl/view
To install Pulse Secure for Ubuntu 20.04, it is a bit complicated since the support isn't great.
First, we'll want to go through the form at https://www.pulsesecure.net/trynow/client-download/. You'll get an email with download links to the latest versions of pulse secure. Download the Linux