根据输出更改变量

Question

下午好，首先我想说我是 PS 的新手，如果我的方法冗长或不准确，我真的很抱歉。

我有一个计算机名列表，这些计算机名声明为我的同事提供给我的单个变量：

$Jon = "Abc1234"
$Mike = "Abc6789"

另外 10 个主机名

然后我询问用户是否要将文件发送到另一台 PC :

$Targetuser = Read-Host 'Who would you like to send it to?'

我想要将上面的输出更改为主机名，但我不确定如何执行此操作。本质上，如果输出是 Mike，将 $targetuser 变量更改为 $Abc6789

提前致谢

Answer 1

动态命名变量几乎总是一个坏主意。相反，使用字典类型，如哈希表：

# Define user->host dictionary
$Hostnames = @{
  Jon  = "Abc1234"
  Mike = "Abc6789"
}

# Ask user for target user
$TargetUser = Read-Host 'Who would you like to send it to?'

# Keep asking until the enter an actual user name
while(-not $Hostnames.ContainsKey($TargetUser)){
  Write-Host "No hostname found for user '${targetUser}'!"
  Write-Host "Choose one of:"
  Write-Host ($Hostnames.Keys -join "`n")
  $TargetUser = Read-Host 'Who would you like to send it to?'
} 

# Get the associated hostname
$TargetHost = $Hostnames[$TargetUser]

# copy file to $TargetHost

根据输出更改变量

Changing a variable based on output

powershell

if-statement

read-host