steam

Video game platform by Valve. More information: https://developer.valvesoftware.com/wiki/Command_Line_Options#Steam_.28Windows.29.

• Launch Steam, printing debug messages to stdout:

steam

• Launch Steam and enable its in-app debug console tab:

steam -console

• Log into Steam with the specified credentials:

steam -login {{username}} {{password}}

• Launch Steam in Big Picture Mode:

steam -tenfoot

• Exit Steam:

steam -shutdown