Silent or Unattended Installation

It is possible to install Git for Windows silently using the following flags when called from a command-line prompt:

Git-<version>-<bitness>.exe /VERYSILENT /NORESTART /NOCANCEL /SP- /CLOSEAPPLICATIONS /RESTARTAPPLICATIONS /COMPONENTS="icons,ext\reg\shellhere,assoc,assoc_sh"

An example of this is

Git-2.12.2.2-64-bit.exe  /VERYSILENT /NORESTART /NOCANCEL /SP- /CLOSEAPPLICATIONS /RESTARTAPPLICATIONS /COMPONENTS="icons,ext\reg\shellhere,assoc,assoc_sh"

You can find all of the possible flags to use by calling the installer with the /? flag (for the options supported by InnoSetup out of the box), and by inspecting the install.iss file (for custom options added only to Git for Windows' installer).

You can also load install parameters from a file with /LOADINF="filename", and you can record parameters to a file using /SAVEINF="filename".

An example of a parameter file is:

[Setup]
Lang=default
Dir=C:\Program Files\Git
Group=Git
NoIcons=0
SetupType=default
Components=
Tasks=
PathOption=Cmd
SSHOption=OpenSSH
CRLFOption=CRLFAlways

More information on commandline parameters can be found in InnoSetup's documentation.