Question

我的其他Puppet代码运行正常。我可以从下面的驱动程序开始成功安装打印机。但是我遇到的是“除非”被忽略。对Puppet中的PowerShell不太熟悉，但是也许有人可以发现我所缺少的东西。

$printers.each |Integer $index, Hash $printer| {
  exec { "add printer driver ${printer[driver_name]} for ${printer[name]}":
    command  => "Add-PrinterDriver -Name \"${printer[driver_name]}\"",
    unless   => "&  if((Get-PrinterDriver -Name \"${printer[driver_name]}\" - ErrorAction SilentlyContinue) -eq $null){exit 1}else{exit 0} }",
    provider => powershell,

我尝试过

"&  if((Get-PrinterDriver -Name \"${printer[driver_name]}\" - ErrorAction SilentlyContinue) -eq $null){exit 1}else{exit 0} }",

和"& { exit ((Get-PrinterDriver -Name \"${printer[driver_name]}\" -ErrorAction Stop) -eq $null) }",

Answer 1

我发现在运行--debug和--verbose时，$ null找不到任何值。我需要使用$null转义\$null并删除else {exit 0}。

下面的新代码。

exec { "add printer driver ${printer[driver_name]} for ${printer[name]}":
  command  => "Add-PrinterDriver -Name \"${printer[driver_name]}\"",
  unless   => "if ((Get-PrinterDriver -Name \"${printer[driver_name]}\" -ErrorAction SilentlyContinue) -eq \$null) {exit 1}",
  provider => powershell,
}

除非人偶有问题

1 个答案: