I'm learning power shell and I have problem with this code. when I parse it, it all works, but not together. what could be the problem? Thank you for answer.
$hotfix = read-host "Enter hotfixID"
Start-Process firefox.exe (get-hotfix |
Where-Object -filter {$_.hotfixID -eq $hotfix} |
Select-Object -ExpandProperty Caption)
Your script works correctly here. Note that I don't have Firefox installed, but it works fine with iexplore. What issue are you experiencing?
Also, as #Colyn1337 stated, you do not need to use Where-Object; you can simplify this script as follows:
$Hotfix = Read-Host "Enter Hotfix ID"
Start-Process firefox.exe
(
Get-HotFix -Id "$Hotfix" |
Select-Object -ExpandProperty Caption
)
EDIT: As discussed in the below comments, the issue was that the arguments do not work when called via powershell.exe -command scriptname. The solution would be to pass the arguments implicitly via ArgumentList:
$Hotfix = Read-Host "Enter Hotfix ID"
Start-Process firefox.exe -ArgumentList `
(
Get-HotFix -Id "$Hotfix" |
Select-Object -ExpandProperty Caption
)
To get a specific hotfix, you'd want to try something lik this:
$hotFix = Read-Host "Enter hotfixID"
Get-Hotfix -Id $hotFix
If I understand what you're trying to do, creating a browser process is not necessary.
Related
this is my code i want it to show a few services from my servers but it keeps showing all of them. i tried using -Name but power shell 7 keeps saying that doesn't exist please help
$offlineServices = (Invoke-Command -ComputerName $server.Name {Get-service [string]$server.Value | `
Where-Object{$_.status -eq 'Stopped'}} ).Name
Get-Service can be used directly against remote servers, like this:
Get-Service -Name $server.Value -ComputerName $server.Name |
Where-Object Status -eq 'Stopped'
If you want to stick with your original remoting technique, you need to use the using modifier:
$offlineServices = (Invoke-Command -ComputerName $server.Name -Script {Get-service $using:server.Value |
Where-Object Status -eq 'Stopped'}).Name
NOTE: you should also remove the backtick before Where-Object as it isn't needed and might cause you issue later when modifying/debugging the code.
please can you help me.
I'm missing some information.
Why when I execute the code:
Invoke-Command -ComputerName domainpc -ScriptBlock {Get-ChildItem -path C:\Users -Filter "username1"}
the result is: username1
And when I execute this script:
$user = Read-Host "Please enter username"
Invoke-Command -ComputerName domainpc -ScriptBlock {Get-ChildItem -path C:\Users -Filter "$user"}
the result is a list of folder contained in C:\Users
I don't understand why executing script get different results than execute code without variable.
Seems that the problem is the variable.
Please can you explain this?
Thanks.
You are hitting scope "problems".
The variable $user inside your script block -ScriptBlock is not known.
Take a look here: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_remote_variables?view=powershell-7.1#using-local-variables
Use $Using:user to get around.
trying to see if anyone has a known workaround for using the test-connection cmdlet in powershell to ping wildcard entries in DNS.
I'm trying to clean out our DNS db and exported a list from our BIND server and am in the process of just pinging through the 600+ machines to see if anything responds. I made my own simple script but have also found one that works slightly better on this forum. The script works but the cmdlet help files state that the -computername parameter does not support wildcards and sure enough, when i run the script all CNAME records are reporting down/false when they actually should be responding. The code I'm using is below and is kind of messy but I just needed something quick and it works, but I've included it below for reference:
Get-Content -path C:\Work\testy.txt | ForEach-Object { Test-Connection -ComputerName $_ -Count 1 -AsJob } | Get-Job | Receive-Job -Wait | Select-Object #{Name='ComputerName';Expression={$_.Address}},#{Name='Reachable';Expression={if ($_.StatusCode -eq 0) { $true } else { $false }}} |out-file -FilePath c:\work\TEST.txt
As pointed out by briantist, any non-existing record name will do. You could generate a GUID to substitute the * in your record name:
"subdomain.domain.tld","*.domain.tld" |ForEach-Object {
Test-Connection -ComputerName $($_ -replace '\*',"$([guid]::NewGuid())")
}
Your expression for whether it's "Reachable" or not can be simplified as well:
#{Name='Reachable'; Expression={[bool]($_.StatusCode -eq 0)}}
I am using Powershell 4.0 on a remote computer (rem_comp) to access another one (loc_comp; Powershell 2.0 installed here) in order to get the number of files listed without folders:
$var1 = 'H:\scripts'
Invoke-Command -Computername loc_comp -scriptblock {(Get-Childitem $var1 -recurse | Where-Object {!$_.PSIsContainer}).count}
However when using $var1 inside -scriptblock, it does not deliver anything (neither any error message).
When using
$var1 = 'H:\scripts'
Invoke-Command -Computername loc_comp -scriptblock {(Get-Childitem $ -recurse | Where-Object {!$_.PSIsContainer}).count}
it works!
Note: Changing var1 from ' to " does not help.
Running the command without Invoke-Command locally faces the same problem.
How to fix this?
To complement CmdrTchort's helpful answer:
PS v3 introduced the special using: scope, which allows direct use of local variables in script blocks sent to remote machines (e.g., $using:var1).
This should work for you, because the machine you're running Invoke-Command on has v4.
$var1 = 'H:\scripts'
Invoke-Command -Computername loc_comp -scriptblock `
{ (Get-Childitem $using:var1 -recurse | Where-Object {!$_.PSIsContainer}).count }
Note that using: only works when Invoke-Command actually targets a remote machine.
When you're using Invoke-command and a script-block , the scriptblock cannot access your params from the outer scope (scoping rules).
You can however, define the params and pass them along with the -Argumentlist
Example:
Invoke-Command -ComputerName "localhost" {param($Param1=$False, $Param2=$False) Write-host "$param1 $param2" } -ArgumentList $False,$True
The following should work for your example:
Invoke-Command -Computername loc_comp -scriptblock {param($var1)(Get-Childitem $var1 -recurse | Where-Object {!$_.PSIsContainer}).count} -ArgumentList $var1
I have a following problem:
I'm in need of a code that will close all running process from a given path on a remote machine.
So far I've found and came up with those 2 lines but none of them actually work.
Get-Process | Where-Object {$_.Path -like "\\$computername\C$\Program Files (x86)\Adobe\Adobe Reader 10.0\Reader\**"} | Stop-Process -Force
This is the second line I've found but still does not want to work with me :)
Get-WmiObject Win32_Process -Filter "ExecutablePath LIKE '\\$computername\C$\Program Files (x86)\Adobe\Adobe Reader 10.0\Reader\'" -ComputerName $computername | Invoke-WmiMethod -Name Terminate
I will be happy to get some advice. Belive that this is something rather simple to do..I hope that is.. :)
Something like this should work:
(Get-WmiObject Win32_Process -ComputerName $computerName | ?{ $_.ExecutablePath -like "*Program Files (x86)\Adobe\Adobe Reader 10.0\Reader*" }).Terminate()
You might have to tweak the "like" expression, however.
Another way to approach this is to run that command local to the machine with PSRemoting.
Invoke-Command $computername -script {
Get-Process | Where-Object {$_.Path -like "c:\Program Files (x86)\Adobe\Adobe Reader 10.0\Reader\*"} | Stop-Process -Force
}