由于库中的内存泄漏,我正在尝试调用新的shell。当我调用shell时,我需要传递一个arg(真正的代码将传递2个args)。在新shell中执行代码块之后,它需要返回一个值。我写了一些测试代码来重现错误:
Function GetLastName
{
Param ($firstName)
$lastName = Powershell -firstName $firstName {
Param ([string]$firstName)
$lastName = ''
if ($firstName = 'John')
{
$lastName = 'Doe'
Write-Host "Hello $firstName, your last name is registered as $lastName"
}
Write-Host "Last name not found"
Write-Output $lastName
}
Write-Output $lastName
}
Function Main
{
$firstName = 'John'
$lastName = GetLastName $firstName
Write-Host "Your name is $firstName $lastName"
}
Main
我得到的错误......
Powershell : -firstName : The term '-firstName' is not recognized as the name of a cmdlet, function, script file, or operable At C:\Scripts\Tests\test1.ps1:5 char:15 + $lastName = Powershell -firstName $firstName { + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (-firstName : Th...e, or operable :String) [], RemoteException + FullyQualifiedErrorId : NativeCommandError program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again. At line:1 char:1 + -firstName John -encodedCommand DQAKAAkACQAJAFAAYQByAGEAbQAgACgAWwBzAHQAcgBpAG4A ... + ~~~~~~~~~~ + CategoryInfo : ObjectNotFound: (-firstName:String) [], CommandNotFoundException + FullyQualifiedErrorId : CommandNotFoundException
任何人都可以帮我解决这个问题吗?
答案 0 :(得分:2)
调用powershell.exe
从PowerShell中执行脚本块的语法略有不同:
powershell.exe -command { scriptblock content here } -args "arguments","go","here"
所以在你的脚本中应该是:
$lastName = powershell -Command {
Param ([string]$firstName)
$lastName = ''
if ($firstName = 'John')
{
$lastName = 'Doe'
Write-Host "Hello $firstName, your last name is registered as $lastName"
} else {
Write-Host "Last name not found"
}
Write-Output $lastName
} -args $firstName
答案 1 :(得分:1)
将代码拆分为两个单独的脚本,并将其中一个用作第二个脚本的启动器。像这样:
# launcher.ps1
powershell.exe -File 'C:\path\to\worker.ps1' -FirstName $firstName
# worker.ps1
[CmdletBinding()]
Param($firstName)
$lastName = ''
if ($firstName = 'John') {
$lastName = 'Doe'
Write-Host "Hello $firstName, your last name is registered as $lastName"
}
Write-Host "Last name not found"
Write-Output $lastName
但请注意,从调用者的角度来看,新进程的主机输出(Write-Host
)将合并到其常规输出(Write-Output
)中。