Powershell環境變量

我想在PowerShell中使用環境變量，但我發現的例子似乎並不奏效。這是我使用的測試腳本：Powershell環境變量

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

腳本的輸出：

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 =

爲什麼我只能使用獲得環境VAR：獲取ChildItem ENV：* VMWARE_ALARM_TARGET_NAME * ，而不是簡單地由$測試= $ ENV：VMWARE_ALARM_TARGET_NAME

來源

2015-01-14 Gabrie

你爲什麼在gci中使用通配符？爲什麼不使用'Get-Item Env：\ VMWARE_ALARM_TARGET_NAME'？我想知道在使用'$ env'的時候，gci調用中可能沒有包含通配符嗎？ – briantist

我將代碼更改爲您的建議，這就是結果。代碼： '$ Test2的= GET-項目ENV：\ VMWARE_ALARM_TARGET_NAME 寫主機「的Test2 =」 $ Test2' 結果： GET-項目：找不到路徑 'ENV：\ VMWARE_ALARM_TARGET_NAME'，因爲它不存在。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

有幾件事情嘗試：

#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，值得一看運行set時cmd.exe顯示的內容。在PowerShell類型中：

cmd 
set 
exit

並查看輸出結果如何。

來源

2015-01-14 22:42:12

由於時間壓力，我不得不去與現在這個權利：

$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*

不是很乾淨的代碼，但它的工作原理。感謝所有的答覆。

Gabrie

來源

2015-01-15 17:24:23 Gabrie

Powershell環境變量

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