For example, you specified a variable as shown below.
$data1 = get-psdrive | where-object {$_.name -like 'c'} | select -expandproperty used
$data2 = get-psdrive | where-object {$_.name -like 'c'} | select -expandproperty free
echo $data1,data2
The output is vertical.
$data1
$data2
I used write-host -nonewline to display output horizontally, but the command does not export to txt
write-host $data1 -nonewline; write-host $data2 -nonewline >> c:\test.txt
How can I display horizontally and export in txt?
How about converting to json (or csv)? Note that ">>" can mix encodings, but add-content doesn't.
get-psdrive c | select used, free | ConvertTo-Json -Compress |
add-content test.txt
get-content test.txt
{"Used":217365741568,"Free":21004943360}
Or just join them. Too bad select -expand doesn't work with multiple properties.
psdrive c | % { ($_.used,$_.free) -join ',' }
217382371328,20988313600
You can't use Write-Host for this. Even if you change to Write-Host -NoNewLine it'll still never work because Write-Host is intended for directly writing into the screen and can't be redirected unless you use PowerShell 5+ and redirect the stream number 6 (Information stream)
Write-Host -NoNewLine $data1,$data2 6>output.txt
in which case it doesn't print out to string of course. In short Write-Host in PowerShell 5+ doesn't write to stdout but the Information stream
The real solution to writing to screen with the ability to redirect to file or pipe to another command is to use Write-Output (which echo is an alias to), and simply use a single string to write to a single line
Write-Output "$data1,$data2"
echo "$data1,$data2"
echo ($data1 + "," + $data2)
See Write-Host Considered Harmful for more details
Use a double quote string with your variables: Write-Host “$data1,$data2”
Read more https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_quoting_rules?view=powershell-7.1
I have a line in my script that downloads a large video file. After the download starts I want to already open the file while is it downloading. The problem is, is that the download command hasn't finished yet so the script stays stuck on the same line.
(Download-File command)
$allFiles = Get-ChildItem | Select-Object -Property name,LastAccessTime | measure-object -Property LastAccessTime -Maximum
$videoFile = Get-ChildItem | Where-Object { $_.LastAccessTime -eq $allFiles.Maximum}
Start-Process $videoFile
(I want this to run in a loop while the download-file command is running)
That should be easy. All you need to do is make it run on a different thread. Use background jobs or Runspaces. Below example is Background Job.
$ScriptBlock = {(Download-File command)}
Start-Job -ScriptBlock $ScriptBlock
do
{
$allFiles = Get-ChildItem | Select-Object -Property name,LastAccessTime | measure-object -Property LastAccessTime -Maximum
$videoFile = Get-ChildItem | Where-Object { $_.LastAccessTime -eq $allFiles.Maximum}
Start-Process $videoFile
}
while (1 -gt 0)
Although, I am not sure if you would want to open the video file in a loop. If it does support opening an incomplete video file, you will have just as many instances of it. Better enclose it in an if (!(Get-Process -name $VideoFile)){} loop to prevent that.
Use the .waitforexit method.
Example:
$proc = Start-Process cmd.exe -PassThru
$proc.WaitForExit()
After the $proc.WaitForExit() line you can open your file.
Its look much better than a loop
This question already has answers here:
How to get disk capacity and free space of remote computer
(16 answers)
Closed 6 years ago.
I am trying to get DISK SPACE (Windows) in Percentage used and free.
Script from which I get the space,
get-psdrive | where Free*
You can try this:
Get-WmiObject -Class win32_Logicaldisk -ComputerName localhost |
where {($_.DriveType -eq 3 -or $_.DriveType -eq 2) -and $_.FileSystem -ne $null } |
Select -Property
#{Name = 'Volume';Expression = {$_.DeviceID -replace ":",""}},
#{Name = 'Free';Expression = { "{0:N0}%" -f (($_.FreeSpace/$_.Size) * 100) } }
I am trying to find a way of retrieving the date/time of which the last windows update was either installed, or checked for.
So far I have found a function that allows to list recent Windows Updates, but it is far too much data and too bloated for such a simple function. Secondly I have tried to access the registry although I am having no luck in retriving the value I am after.
I am testing this on a Windows 10 Machine although the software will probably reside on Windows Server 2012 R2.
Here is an example of some of the code I have tried:
$key = “SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\Results\Install”
$keytype = [Microsoft.Win32.RegistryHive]::LocalMachine
$RemoteBase = [Microsoft.Win32.RegistryKey]::OpenBaseKey($keytype,"My Machine")
$regKey = $RemoteBase.OpenSubKey($key)
$KeyValue = $regkey.GetValue(”LastSuccessTime”)
$System = (Get-Date -Format "yyyy-MM-dd hh:mm:ss")
Also, just trying the Get-ChildItem
$hello = Get-ChildItem -Path “hkcu:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\”
foreach ($a in $hello) {
$a
}
I've checked in regedit and this key does not exist. Going to the "Windows Update" path shows only App Updates and not Windows updates.
EDIT
I seem to be closer to my goal with this line:
Get-HotFix | Where {$_.InstallDate -gt 30}
However how to I only retrive those of which have been installed in the last 30 days? And this doesnt show many results, even using Select $_.InstallDate
an option :
gwmi win32_quickfixengineering |sort installedon -desc
Another alternative, using the com object Microsoft.Update.Session can be find here : https://p0w3rsh3ll.wordpress.com/2012/10/25/getting-windows-updates-installation-history/
in short :
$Session = New-Object -ComObject Microsoft.Update.Session
$Searcher = $Session.CreateUpdateSearcher()
$HistoryCount = $Searcher.GetTotalHistoryCount()
# http://msdn.microsoft.com/en-us/library/windows/desktop/aa386532%28v=vs.85%29.aspx
$Searcher.QueryHistory(0,$HistoryCount) | ForEach-Object {$_}
Here you have how to know the date and time of the last Windows update in a single line of Powershell:
(New-Object -com "Microsoft.Update.AutoUpdate"). Results | fl
You also have the following script to check it massively in Windows Server:
$ servers = Get-ADComputer -Filter {(OperatingSystem-like "* windows * server *") -and (Enabled -eq "True")} -Properties OperatingSystem | Sort Name | select -Unique Name
foreach ($ server in $ servers) {
write-host $ server.Name
Invoke-Command -ComputerName $ server.Name -ScriptBlock {
(New-Object -com "Microsoft.Update.AutoUpdate"). Results}
}
Extracted from: https://www.sysadmit.com/2019/03/windows-update-ver-fecha-powershell.html
Get-HotFix |?{$_.InstalledOn -gt ((Get-Date).AddDays(-30))}
Using PowerShell, you can get the date of the las Windows update like this:
$lastWindowsUpdate = (Get-Hotfix | Sort-Object -Property InstalledOn -Descending | Select-Object -First 1).InstalledOn
Is there a simple way to hook into the standard 'Add or Remove Programs' functionality using PowerShell to uninstall an existing application? Or to check if the application is installed?
$app = Get-WmiObject -Class Win32_Product | Where-Object {
$_.Name -match "Software Name"
}
$app.Uninstall()
Edit: Rob found another way to do it with the Filter parameter:
$app = Get-WmiObject -Class Win32_Product `
-Filter "Name = 'Software Name'"
EDIT: Over the years this answer has gotten quite a few upvotes. I would like to add some comments. I have not used PowerShell since, but I remember observing some issues:
If there are more matches than 1 for the below script, it does not work and you must append the PowerShell filter that limits results to 1. I believe it's -First 1 but I'm not sure. Feel free to edit.
If the application is not installed by MSI it does not work. The reason it was written as below is because it modifies the MSI to uninstall without intervention, which is not always the default case when using the native uninstall string.
Using the WMI object takes forever. This is very fast if you just know the name of the program you want to uninstall.
$uninstall32 = gci "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match "SOFTWARE NAME" } | select UninstallString
$uninstall64 = gci "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match "SOFTWARE NAME" } | select UninstallString
if ($uninstall64) {
$uninstall64 = $uninstall64.UninstallString -Replace "msiexec.exe","" -Replace "/I","" -Replace "/X",""
$uninstall64 = $uninstall64.Trim()
Write "Uninstalling..."
start-process "msiexec.exe" -arg "/X $uninstall64 /qb" -Wait}
if ($uninstall32) {
$uninstall32 = $uninstall32.UninstallString -Replace "msiexec.exe","" -Replace "/I","" -Replace "/X",""
$uninstall32 = $uninstall32.Trim()
Write "Uninstalling..."
start-process "msiexec.exe" -arg "/X $uninstall32 /qb" -Wait}
To fix up the second method in Jeff Hillman's post, you could either do a:
$app = Get-WmiObject
-Query "SELECT * FROM Win32_Product WHERE Name = 'Software Name'"
Or
$app = Get-WmiObject -Class Win32_Product `
-Filter "Name = 'Software Name'"
One line of code:
get-package *notepad* |% { & $_.Meta.Attributes["UninstallString"]}
function Uninstall-App {
Write-Output "Uninstalling $($args[0])"
foreach($obj in Get-ChildItem "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall") {
$dname = $obj.GetValue("DisplayName")
if ($dname -contains $args[0]) {
$uninstString = $obj.GetValue("UninstallString")
foreach ($line in $uninstString) {
$found = $line -match '(\{.+\}).*'
If ($found) {
$appid = $matches[1]
Write-Output $appid
start-process "msiexec.exe" -arg "/X $appid /qb" -Wait
}
}
}
}
}
Call it this way:
Uninstall-App "Autodesk Revit DB Link 2019"
I found out that Win32_Product class is not recommended because it triggers repairs and is not query optimized. Source
I found this post from Sitaram Pamarthi with a script to uninstall if you know the app guid. He also supplies another script to search for apps really fast here.
Use like this: .\uninstall.ps1 -GUID
{C9E7751E-88ED-36CF-B610-71A1D262E906}
[cmdletbinding()]
param (
[parameter(ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true)]
[string]$ComputerName = $env:computername,
[parameter(ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true,Mandatory=$true)]
[string]$AppGUID
)
try {
$returnval = ([WMICLASS]"\\$computerName\ROOT\CIMV2:win32_process").Create("msiexec `/x$AppGUID `/norestart `/qn")
} catch {
write-error "Failed to trigger the uninstallation. Review the error message"
$_
exit
}
switch ($($returnval.returnvalue)){
0 { "Uninstallation command triggered successfully" }
2 { "You don't have sufficient permissions to trigger the command on $Computer" }
3 { "You don't have sufficient permissions to trigger the command on $Computer" }
8 { "An unknown error has occurred" }
9 { "Path Not Found" }
9 { "Invalid Parameter"}
}
To add a little to this post, I needed to be able to remove software from multiple Servers. I used Jeff's answer to lead me to this:
First I got a list of servers, I used an AD query, but you can provide the array of computer names however you want:
$computers = #("computer1", "computer2", "computer3")
Then I looped through them, adding the -computer parameter to the gwmi query:
foreach($server in $computers){
$app = Get-WmiObject -Class Win32_Product -computer $server | Where-Object {
$_.IdentifyingNumber -match "5A5F312145AE-0252130-432C34-9D89-1"
}
$app.Uninstall()
}
I used the IdentifyingNumber property to match against instead of name, just to be sure I was uninstalling the correct application.
Here is the PowerShell script using msiexec:
echo "Getting product code"
$ProductCode = Get-WmiObject win32_product -Filter "Name='Name of my Software in Add Remove Program Window'" | Select-Object -Expand IdentifyingNumber
echo "removing Product"
# Out-Null argument is just for keeping the power shell command window waiting for msiexec command to finish else it moves to execute the next echo command
& msiexec /x $ProductCode | Out-Null
echo "uninstallation finished"
I will make my own little contribution. I needed to remove a list of packages from the same computer. This is the script I came up with.
$packages = #("package1", "package2", "package3")
foreach($package in $packages){
$app = Get-WmiObject -Class Win32_Product | Where-Object {
$_.Name -match "$package"
}
$app.Uninstall()
}
I hope this proves to be useful.
Note that I owe David Stetler the credit for this script since it is based on his.
Based on Jeff Hillman's answer:
Here's a function you can just add to your profile.ps1 or define in current PowerShell session:
# Uninstall a Windows program
function uninstall($programName)
{
$app = Get-WmiObject -Class Win32_Product -Filter ("Name = '" + $programName + "'")
if($app -ne $null)
{
$app.Uninstall()
}
else {
echo ("Could not find program '" + $programName + "'")
}
}
Let's say you wanted to uninstall Notepad++. Just type this into PowerShell:
> uninstall("notepad++")
Just be aware that Get-WmiObject can take some time, so be patient!
Use:
function remove-HSsoftware{
[cmdletbinding()]
param(
[parameter(Mandatory=$true,
ValuefromPipeline = $true,
HelpMessage="IdentifyingNumber can be retrieved with `"get-wmiobject -class win32_product`"")]
[ValidatePattern('{[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}}')]
[string[]]$ids,
[parameter(Mandatory=$false,
ValuefromPipeline=$true,
ValueFromPipelineByPropertyName=$true,
HelpMessage="Computer name or IP adress to query via WMI")]
[Alias('hostname,CN,computername')]
[string[]]$computers
)
begin {}
process{
if($computers -eq $null){
$computers = Get-ADComputer -Filter * | Select dnshostname |%{$_.dnshostname}
}
foreach($computer in $computers){
foreach($id in $ids){
write-host "Trying to uninstall sofware with ID ", "$id", "from computer ", "$computer"
$app = Get-WmiObject -class Win32_Product -Computername "$computer" -Filter "IdentifyingNumber = '$id'"
$app | Remove-WmiObject
}
}
}
end{}}
remove-hssoftware -ids "{8C299CF3-E529-414E-AKD8-68C23BA4CBE8}","{5A9C53A5-FF48-497D-AB86-1F6418B569B9}","{62092246-CFA2-4452-BEDB-62AC4BCE6C26}"
It's not fully tested, but it ran under PowerShell 4.
I've run the PS1 file as it is seen here. Letting it retrieve all the Systems from the AD and trying to uninstall multiple applications on all systems.
I've used the IdentifyingNumber to search for the Software cause of David Stetlers input.
Not tested:
Not adding ids to the call of the function in the script, instead starting the script with parameter IDs
Calling the script with more then 1 computer name not automatically retrieved from the function
Retrieving data from the pipe
Using IP addresses to connect to the system
What it does not:
It doesn't give any information if the software actually was found on any given system.
It does not give any information about failure or success of the deinstallation.
I wasn't able to use uninstall(). Trying that I got an error telling me that calling a method for an expression that has a value of NULL is not possible. Instead I used Remove-WmiObject, which seems to accomplish the same.
CAUTION: Without a computer name given it removes the software from ALL systems in the Active Directory.
For Most of my programs the scripts in this Post did the job.
But I had to face a legacy program that I couldn't remove using msiexec.exe or Win32_Product class. (from some reason I got exit 0 but the program was still there)
My solution was to use Win32_Process class:
with the help from nickdnk this command is to get the uninstall exe file path:
64bit:
[array]$unInstallPathReg= gci "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match $programName } | select UninstallString
32bit:
[array]$unInstallPathReg= gci "HKLM:\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall" | foreach { gp $_.PSPath } | ? { $_ -match $programName } | select UninstallString
you will have to clean the the result string:
$uninstallPath = $unInstallPathReg[0].UninstallString
$uninstallPath = $uninstallPath -Replace "msiexec.exe","" -Replace "/I","" -Replace "/X",""
$uninstallPath = $uninstallPath .Trim()
now when you have the relevant program uninstall exe file path you can use this command:
$uninstallResult = (Get-WMIObject -List -Verbose | Where-Object {$_.Name -eq "Win32_Process"}).InvokeMethod("Create","$unInstallPath")
$uninstallResult - will have the exit code. 0 is success
the above commands can also run remotely - I did it using invoke command but I believe that adding the argument -computername can work
For msi installs, "uninstall-package whatever" works fine. For non-msi installs (Programs provider), it takes more string parsing. This should also take into account if the uninstall exe is in a path with spaces and is double quoted. Install-package works with msi's as well.
$uninstall = get-package whatever | % { $_.metadata['uninstallstring'] }
# split quoted and unquoted things on whitespace
$prog, $myargs = $uninstall | select-string '("[^"]*"|\S)+' -AllMatches |
% matches | % value
$prog = $prog -replace '"',$null # call & operator doesn't like quotes
$silentoption = '/S'
$myargs += $silentoption # add whatever silent uninstall option
& $prog $myargs # run uninstaller silently
Start-process doesn't mind the double quotes, if you need to wait anyway:
# "C:\Program Files (x86)\myapp\unins000.exe"
get-package myapp | foreach { start -wait $_.metadata['uninstallstring'] /SILENT }
On more recent windows systems, you can use the following to uninstall msi installed software. You can also check $pkg.ProviderName -EQ "msi" if you like.
$pkg = get-package *name*
$prodCode = "{" + $pkg.TagId + "}"
msiexec.exe /X $prodCode /passive