## =====================================================================
## Title : GetVI-VMList
## Description : Retrieve VMware VM List
## Author : Idera
## Date : 9/11/2008
## Input : -VIserver : Virtual Infrastructure server
## -verbose -debug
## Output : VMs
## Usage : PS> .\GetVI-VMList -VIserver myVIserver -verbose -debug
## Notes :
## Tag : PowerShell, VMware
## Change log :
## 4/1/2009 - Added input parameters, param block, main and trap
## 4/1/2009 - Added Read-Host input prompts and Write-Verbose and Write-Debug statements
## =====================================================================
param
(
[string]$VIserver = "$(Read-Host 'VI Server' [e.g. vs01])",
[switch]$verbose = $true,
[switch]$debug = $false
)
function main()
{
if ($verbose) {$VerbosePreference = "Continue"}
if ($debug) {$DebugPreference = "Continue"}
Write-Verbose "Retrieve VMware VM List..."
CheckVIToolKit
GetVI-VMList $VIserver
}
function GetVI-VMList($VIserver)
{
trap [Exception]
{
write-error $("TRAPPED: " + $_.Exception.Message);
continue;
}
# Clear Screen
Clear-Host
# Warn user they must be logged on with an account that has connection rights to the VI server.
$answer = Read-Host "`n`n`n`tNOTE: You must be logged on with an account that has connection rights to the VI server. Press <X> to exit, <C> to continue if you have a connection to a VI Server already or <Enter> to continue. "
if($answer -eq "x")
{
break
}
else
{
if($VIserver -eq "")
{
Write-Host "`n`n`n`tERROR- A VI server must be specified!`n`n" -foregroundcolor red
Read-Host "`n`t Press <Enter> to continue "
break
}
else
{
if($answer -eq "C")
{
# do nothing as we have a connection we can use already
}
else
{
Connect-VIServer $VIserver
Write-Host "`n`n`t You have connected to Server: $VIserver.Name with a SessionID of: $VIserver.SessionID ."
Read-Host "`n`t Press <Enter> to continue "
}
}
Clear-Host
# List the servers
$answer = Read-Host "`n`n`t Enter (S) to specify a VM or (L) to display a list of all VM's "
if($answer -eq "S")
{
$answer = Read-Host "`n`n`t Enter the name of VM to display "
Get-VM $answer | Format-Table -autosize
Read-Host "`n`n`t Press <Enter> to continue "
}
elseif($answer -eq "L")
{
Get-VM | Format-Table | more
Read-Host "`n`n`t Press <Enter> to continue "
}
else
{
Read-Host "`n`n`t Invalid option entered, Press <Enter> to continue "
break
}
}
}
function CheckVIToolKit()
{
# Before we do anything we must check to see if the user has the VI toolkit installed.
# If user does not then we prompt the user and exit.
$Error.Clear()
Get-PSSnapin vmware*
if($Error.Count -ne 0)
{
Clear-Host
Write-Host "`n`n`t`t ERROR - To run this script, the VI Toolkit must be installed and registered with Powershell. If the VI Tollkit is installed," -foregroundcolor red -backgroundColor yellow
Write-Host "`t`t go to the Settings menu in Powershell Plus and click on Manage Snapins." -foregroundcolor red -backgroundColor yellow
Read-Host "`n`n`t Press <Enter> to continue."
Clear-Host
break
}
}
main在此脚本中，第46行，Read-Host是新Cmdlets。它对应Write-host,Write是输出，Read就是读取，从PowerShell读取输入信息。
语法如下：
SYNTAX
Read-Host [[-Prompt] <Object>] [-AsSecureString] [<CommonParameters>]
PARAMETERS
-AsSecureString
Required? false
Position? Named
Accept pipeline input? false
Parameter set name (All)
Aliases None
Dynamic? false
-Prompt <Object>
Required? false
Position? 0
Accept pipeline input? true (FromRemainingArguments)
Parameter set name (All)
Aliases None
Dynamic? false
<CommonParameters>
This cmdlet supports the common parameters: Verbose, Debug,
ErrorAction, ErrorVariable, WarningAction, WarningVariable,
OutBuffer, PipelineVariable, and OutVariable. For more information, see
about_CommonParameters (https://go.microsoft.com/fwlink/?LinkID=113216)
.
INPUTS
System.Object
OUTPUTS
System.String
System.Security.SecureString
ALIASES
None第80行的Get-Vm是要安装Vmware模块后才具有的命令。
