Passing a .txt file to a Powershell command - powershell

Question

I am trying to pass a .txt file with arguments to an .exe file via powershell. Currently, this is what I have.
Write-Host "starting upgrade at $(Get-Date -format 'U')"
C:\dev\temp.exe.exe /DIR="C:\TEST" /BTPServerHost="Test" /DBInstance="testDB" /Log=C:\path\to\test\testlog.txt
This is calling a function within an InnoScript file that accepts command line input.
How would I format the .txt file, and how would I be able to pass it into the .exe? Any help would be appreciated! Thanks!

Answer 1

If you are saying, in this text file, there are just these argument line on individual rows and you are saying you've already tried something like the below and were not successful?
You also don't need the Write-Host for the message line, since the default is output to screen. You normal only need Write-Host for colorizing screen text, and a few other formatting cases, depending on what you are doing. All-in-All, Write-Host should be avoided.
"starting upgrade at $(Get-Date -format 'U')"
($ConsoleCommand = Get-Content -Path 'd:\temp\input.txt' -Raw)
# Results - showing the commands in the file before process them
whoami
get-date
'hello world'
Without using the -Wait switch, this will spawn 3 separate PowerShell consoles with the results
ForEach($CmdLine in $ConsoleCommand)
{ Start-Process -FilePath powershell -ArgumentList "-NoExit","-Command &{ $CmdLine }" }
you can of course point to your .exe vs what I am doing here.
Start-Process
By adding the -Raw after specifying the .txt file path it ignores newline characters and returns the entire contents of a file in one string with the newlines preserved. By default, newline characters in a file are used as delimiters to separate the input into an array of strings.

Answer 2

This script takes parameters from a txt file and passes them into an executable and auto-populates the fields in the installation wizard. This is what I'm looking to do, but I don't want to start a new process for each argument in the input txt file.
Write-Host "starting upgrade at $(Get-Date -format 'U')" Get-Content -Path C:\TestInput.txt -Raw | foreach {Start-Process C:\dev\test.exe -ArgumentList $_}
The TestInput.txt file passed in looks like this:
/DIR="C:\TEST"
/ServerHost="Test"
/DBInstance="testDB"
/Log=C:\testlog.txt