To see what parameters you can use, execute the following from the command line:
install-file /help
where install-file for the following products is as follows:
See the Examples section further in this topic for examples of some of the parameters you can use.
/log drive:\path\LogFilename
Use the /q parameter to install silently:
start /wait install-file.exe /q [parameters]
start /wait vce_50.exe /q InstallFolder=c:\DirectoryName
start /wait vce_50.exe /q InstallFolder2=c:\EclipseInstallDirectory