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I have a script that exports a site and restores it in another web application. I want to check if the target site already exists. Is there an easy way to tell if is free, without throwing an error in Powershell?

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marked as duplicate by Robert Lindgren Apr 17 '14 at 7:12

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up vote 24 down vote accepted

Using Powershell's ErrorAction you can suppress the error if a web does not exist.

$exists = (Get-SPWeb $url -ErrorAction SilentlyContinue) -ne $null
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This seems to work, thanks very much. – Dan May 16 '11 at 6:32

SharePoint 2010:

Get-SPWeb -Identity $url | Select-Object -Property Exists -ErrorAction SilentlyContinue

SharePoint 2007:

$siteCollection = New-Object Microsoft.SharePoint.SPSite($url)
$site = $siteCollection.OpenWeb()
Write-Host $site.Exists
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+1, good answer :) – Abe Miessler May 16 '11 at 4:43
This throws an error still: Get-SPWeb -Identity ''; | Select-Object -Property Exists The 2007 version doesn't throw errors but returns true for sites that don't exist. – Dan May 16 '11 at 6:28
Do you prefix the url with protocol moniker such as http://? It is obligatory I believe. – Alexey Krasheninnikov May 17 '11 at 9:58
Get-SPWeb : Cannot find an SPSite object that contains the following Id or Url: -- this is what you get in case that web never existed – Alexey Krasheninnikov May 17 '11 at 10:00
You can either swallow the error by using -ErrorAction SilentlyContinue or handle it using trap, try/catch or 2>&1. Read on PowerShell error handling elsewhere. – Alexey Krasheninnikov May 17 '11 at 10:04

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