Powershell环境变量

我想在PowerShell中使用环境变量，但我发现的例子似乎并不奏效。这是我使用的测试脚本：Powershell环境变量

Get-ChildItem Env: 
Write-Host "************" 
$AlarmDatastore = Get-ChildItem Env:*VMWARE_ALARM_TARGET_NAME* 
Write-Host "Var = " $AlarmDatastore.value 
$Test = $env:VMWARE_ALARM_TARGET_NAME 
Write-Host "Test = " $Test

脚本的输出：

USERNAME      ADMIN.GABRI 
USERPROFILE     C:\Users\admin.gabri 
VMWARE_ALARM_ALARMVALUE  Current values for metric/state 
VMWARE_ALARM_DECLARINGSUMMARY ([Yellow metric Is above 10; Red metric Is a... 
VMWARE_ALARM_EVENTDESCRIPTION Alarm 'Alarm 10 percent test with script' on ... 
VMWARE_ALARM_ID    alarm-601 
VMWARE_ALARM_NAME    Alarm 10 percent test with script 
VMWARE_ALARM_NEWSTATUS   Red 
VMWARE_ALARM_OLDSTATUS   Gray 
VMWARE_ALARM_TARGET_ID   datastore-12587 
VMWARE_ALARM_TARGET_NAME  VCD-VMFS-095-FAST-VNX-5400-04 
VMWARE_ALARM_TRIGGERINGSUMM... Metric Disk Space actually used = 96 
windir       C:\Windows 
************ 
Var = VCD-VMFS-095-FAST-VNX-5400-04 
Test =

为什么我只能使用获得环境VAR：获取ChildItem ENV：* VMWARE_ALARM_TARGET_NAME * ，而不是简单地由$测试= $ ENV：VMWARE_ALARM_TARGET_NAME

来源

2015-01-14 Gabrie

你为什么在gci中使用通配符？为什么不使用'Get-Item Env：\ VMWARE_ALARM_TARGET_NAME'？我想知道在使用'$ env'的时候，gci调用中可能没有包含通配符吗？ – briantist

我将代码更改为您的建议，这就是结果。代码： '$ Test2的= GET-项目ENV：\ VMWARE_ALARM_TARGET_NAME 写主机 “的Test2 =” $ Test2' 结果： GET-项目：找不到路径 'ENV：\ VMWARE_ALARM_TARGET_NAME'，因为它不存在。在G：\ DataStoreAlarms \ Scripts \ EnvTest.ps1：5 char：10 + $ Test2 = Get-Item Env：\ VMWARE_ALARM_TARGET_NAME + ~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~ + CategoryInfo：ObjectNotFound：Env：\ VMWARE_ALARM_TARGET_NAME：String）[Get-Item]，ItemNotFoundException + FullyQualifiedErrorId：PathNotFound，Microsoft.PowerShell.Commands。 GetItemCommand – Gabrie

如何：'gi env：* VMWARE_ALARM_TARGET_NAME * | fl *'？ – briantist

有几件事情尝试：

#Use ${ } for complex variable names 
${env:VMWARE_ALARM_TARGET_NAME} 

#Or as part of a print statement use env directly (with or without ${env:}): 
Write-Host "Test = $($env:VMWARE_ALARM_TARGET_NAME)" 

#At an interactive prompt see if it can be tab completed 
$env:VMWWARE #then tab to see if it shows up in auto complete

另外，值得一看运行set时cmd.exe显示的内容。在PowerShell类型中：

cmd 
set 
exit

并查看输出结果如何。

来源

2015-01-14 22:42:12

由于时间压力，我不得不去与现在这个权利：

$AlarmTARGET_NAME = get-childitem Env:*VMWARE_ALARM_TARGET_NAME* 
$AlarmNAME = get-childitem Env:*VMWARE_ALARM_NAME* 
$AlarmEVENTDESCRIPTION = get-childitem Env:*VMWARE_ALARM_EVENTDESCRIPTION* 
$AlarmDECLARINGSUMMARY = get-childitem Env:*VMWARE_ALARM_DECLARINGSUMMARY* 
$AlarmVALUE = get-childitem Env:*VMWARE_ALARM_ALARMVALUE*

不是很干净的代码，但它的工作原理。感谢所有的答复。

Gabrie

来源

2015-01-15 17:24:23 Gabrie

Powershell环境变量

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