Question

我有一个烦人的问题，我似乎无法找到答案。我正在使用powershell脚本卸载程序和批处理文件，以便按照我想要按特定顺序删除的程序运行脚本。我在网上找到了这个脚本，它在我的测试机上运行得很好。当我在另一台机器上运行脚本时，问题就开始了。这是我得到的错误：

Error formatting a string: Input string was not in a correct format..
At C:\Users\currentuser\Desktop\uninstallScript.ps1:60 char:1
+ &msiexec `/qn `/x `{$stringer`}
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo          : InvalidOperation: ({{0}}}:String) [], 
RuntimeException
+ FullyQualifiedErrorId : FormatError

这是PowerShell脚本：

###########################################
######## Written by DC  2012-02-13#########
###########################################
<#

.SYNOPSIS

Uninstalls software by only passing the Software Title.
Should work with all msiexec string uninstallers. 
For uninstall commands that end in uninstall.exe or helper.exe a "/S" is 
used as a switch.

.PARAMETER DisplayName

The complete or partial name of the software being uninstalled. Must appear 
as shown in add / remove programs (case insenstive).


.EXAMPLE

Uninstall-Program Java

Will search the registry and uninstall all instances of Java from a machine.

#>

[cmdletBinding()]
Param
(
[String]$DisplayName = $(throw "DisplayName is Required")
)

Set-Variable -Name ThirtyMachine -Value 
"HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" -Option Constant
Set-Variable -Name SixtyMachine -Value 
"HKLM:\SOFTWARE\WOW6432NODE\Microsoft\Windows\CurrentVersion\Uninstall" -
Option Constant
Set-Variable -Name ThirtyUser -Value 
"HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall" -Option Constant
Set-Variable -Name SixtyUser -Value 
"HKCU:\SOFTWARE\WOW6432NODE\Microsoft\Windows\CurrentVersion\Uninstall" -
Option Constant

$regs = $ThirtyMachine,$SixtyMachine,$ThirtyUser,$SixtyUser

foreach ($reg in $regs)
{ 
if(Test-Path $reg)
{
$SubKeys = Get-ItemProperty "$reg\*"
}
else
{
$SubKeys = $null
}
foreach($key in $SubKeys)
{
if($key.DisplayName -match "$DisplayName")
{

Write-Host "Found Software " $key.DisplayName
if($key.UninstallString -match "^msiexec")
{
$startGUID = $key.UninstallString.IndexOf("{") + 1
$endGuid = $key.UninstallString.IndexOf("}") - $startGUID
$stringer = $key.UninstallString.Substring($startGUID,$endGuid)
Write-Host "Uninstaller Known, now uninstalling"
&msiexec `/qn `/x `{$stringer`}

}
if($key.UninstallString.Replace('"',"") -match 'uninstall.exe\Z' -or 
$key.UninstallString.replace('"',"") -match 'helper.exe\Z' )
{
$stringer = $key.UninstallString.Replace('"',"")
if(Test-Path $stringer )
{
Write-Host "Possible Uninstaller found. Trying"  $key.UninstallString "/S"
&$stringer /S
}
}
}
}
}

我调试了PowerShell ISE中的代码，以验证变量$stringer是否包含正确的值。所以我认为这与在两台机器上运行的PowerShell版本有关。脚本工作的测试机器是版本2，而我得到错误的另一台机器是版本4.我几乎没有开始学习powershell，所以我在这个问题上摸不着头脑。希望解决起来很简单。我感谢任何提供的帮助。

Answer 1

msiexec来电中的转义字符```导致错误，不应该出现。这是一种称呼你如何正确的方式：

 & msiexec /qn "/x{$stringer}"

或者，您可以使用Start-Process并等待该过程：

Start-Process -FilePath 'msiexec' -ArgumentList @('/qn','/x',"{$stringer}") -Wait

powershell输入字符串格式不正确

1 个答案: