You need to perform silent DCS agent linux upgrade and would like to know command line syntax.
DCS 6.10.x
DCS 6.9.x
Execute the DCS agent .bin installer package with -silent switch
./agent<OS Platform>.bin -silent
For the standard upgrade all existing settings will be preserved and no use input is required
Example syntax for DCS agent upgrade on RHEL8
./agent64-linux-rhel8.bin -silent