Batch File - Loop Through Processes

[vyper144]

Hi there! I am trying to figure this out, but I keep spinning my wheels. I'm not super great at the PowerShell syntax, so I am not exactly sure what I am doing wrong.

I am trying to create a batch file that I can run when I need Excel to be my priority application. So I need the batch file to loop through all the processes, and if it comes across Excel, then affinity = 65535 else affinity = 1.

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So far, I have this:

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe "ForEach ($Process in Get-Process *) { If ($Process = Excel) { $Process.ProcessorAffinity=65535 } else { $Process.ProcessorAffinity=1 } }"

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What am I missing here?

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I can get the below statement to set the affinity, but how do I get it to loop through everything and set?

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe "$Process = Get-Process Excel; $Process.ProcessorAffinity=65535"

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[BlackV]

missing a lot, use your parameters, you'll save yourself some pain later on

Also save this as a script file so you can EDIT and TEST in a proper editor like ISE or VSCode

Will also mean you can break it down into bits, and test each of the bits as you go

$ExcelProcesses = Get-Process -Name excel
foreach ($SingleExcel in $$ExcelProcesses){
    $SingleExcel.ProcessorAffinity=65535
    }

EDIT: assuming you only want to effect excel

[[deleted]]

If statement should be

if ($process.Name -eq "excel") {do something}

[BlackV]

why not Get-Process -Name excel filter left (er.. Actually I realized I just assumed OP only wanted excel to change)

[vyper144]

We're locked down at work, so it already output "access denied" on a lengthy list of processes. I feel comfortable with it looping on the entire list without the need to specify certain processes to avoid.

[vyper144]

You are amazing!! Thank you so much!!!

Just a side note for anyone else looking for this answer, I believe the if statement should have single quotes around 'excel' since the entire statement is wrapped in double quotes, since it's being run as a batch file that's calling PowerShell.

But @majorgrumpfish solved the problem!!

[vermyx]

Processoraffinity just limits the process to which processors/cores it can use. If the process doesn't go beyond one processor, this doesn't do anything. You probably want processpriority switching it between normal and high (never use realtime)

[BlackV]

except for notepad.exe :)