You can silently upgrade Ignition from a command shell without showing any user prompts. Remember to make a Gateway backup before performing any type of upgrade. Also, the installer cannot automatically start the Gateway after a silent upgrade.
/etc/init.d/ignition start command as shown below.
Command line example:
gwcmd -b /var/backups/mybackup.gwbk
sudo ./ignition-8.x.x-linux-x64-installer.run --mode unattended --unattendedmodeui none --autoupgrade true
-- mode unattended (ensures that no prompts appear during installation)
-- unattendedmodeui none | minimal (the
none flag does not display any sort of graphic during installation; the
minimal flag displays a small progress bar and nothing else, but only if you are working in a graphical system)
-- autoupgrade true (runs the installer in upgrade mode)