PowerShell Running Executables GUI Applications
Example
PS> gui_app.exe (1)
PS> & gui_app.exe (2)
PS> & gui_app.exe | Out-Null (3)
PS> Start-Process gui_app.exe (4)
PS> Start-Process gui_app.exe -Wait (5)
GUI applications launch in a different process, and will immediately return control to the PowerShell host. Sometimes you need the application to finish processing before the next PowerShell statement must be executed. This can be achieved by piping the application output to $null (3) or by using Start-Process with the -Wait switch (5).
