On Windows, run the MtoA installer with the flags /S /FORCE_UNINSTALL=1

MtoA-2.0.2.2-2018.exe /S /FORCE_UNINSTALL=1

You can use /D to specify a different install location.

On Linux, use the – – silent command line flags. Note the space between “- -” and “silent”.

sudo sh MtoA-2.0.1.1-linux-2017.run -- silent

The Linux installer will put MtoA in /opt/solidangle/mtoa/<maya version>. If you want to install in a different location, you can extract MtoA, and then set up your own script for installing MtoA.

On OSX, use the installer command:

sudo installer -pkg "MtoA-2.0.2.4-darwin-2017.pgk" -target /

Note that -target is a volume, not a folder.