Question

I’m new to PowerShell and I’m looking for a way to un-install multiple applications. I have a list of applications in a text file that i want to Un-install. Here’s the code i have so far:

# Retrieve names of all softwares to un-install and places in variable $app

$App = Get-Content "C:\temp\un-installApps.txt"

# Cycle through each of the softwares to un-install and store in the WMI variable

Foreach ($AppName in $App)
{
    $AppTmp = Get-WmiObject -query "Select * from win32_product WHERE Name like" + $AppName 
    $AppNames = $AppNames + $AppTmp
}

foreach ($Application in $AppNames )
{
    msiexec /uninstall $Application.IdentifyingNumber
}

The following lines causes the issues

$AppTmp = Get-WmiObject -query "Select * from win32_product WHERE Name like" + $AppName 
$AppNames = $AppNames + $AppTmp"

Any ideas how i can get this to work?

Answer 1

I think it’s because there is no space between like and the application name, and there needs to be single quotes around the application name. That part should look like like '" + $AppName + "'".

However, you could do the whole script more simply like this:

$App = Get-Content "C:\temp\un-installApps.txt"

gwmi win32_product|
    where { $App -contains $_.Name }|
    foreach { $_.Uninstall() } | out-null