On Error Next Powershell
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few minutes. Join Now Hey all, i am looking for the equivalent to the vbscript on error resume next for powershell here is my for loop its reading a list of programs and running through
$erroractionpreference = 'continue'
them to uninstall but some computers have some and some dont so i when it trap exception in powershell errors on that i want it to continue through the ps1 script. foreach ($compname in $component){ $app = Get-WmiObject -ComputerName $strComputer -Credential
Powershell Continue After Catch
$cred -Class Win32_Product | Where-Object{ $_.Name -match $compname } $app.uninstall() } Thanks Reply Subscribe View Best Answer RELATED TOPICS: Powershell If Statement Error 2 Replies Mace OP Best powershell foreach continue on error Answer Martin9700 Aug 5, 2010 at 2:23 UTC $ErrorActionPreference = "SilentlyContinue" At it's most basic. But you can also create Trap functions where look pretty interesting. Here's a good write-up: http://huddledmasses.org/trap-exception-in-powershell/ 1 Thai Pepper OP Kyle R Aug 5, 2010 at 3:16 UTC hey thanks for the reply i did look at that $ErrorActionPreference earlier and it wasn't working for my script but setting up a trap did thanks for the info! powershell erroraction 0 This discussion has been inactive for over a year. You may get a better answer to your question by starting a new discussion. Text Quote Post |Replace Attachment Add link Text to display: Where should this link go? Add Cancel × Insert code Language Apache AppleScript Awk BASH Batchfile C C++ C# CSS ERB HTML Java JavaScript Lua ObjectiveC PHP Perl Text Powershell Python R Ruby Sass Scala SQL VB.net Vimscript XML YAML Insert Cancel Join me to this group Reply × Users who spiced this post Read these next... © Copyright 2006-2016 Spiceworks Inc. About Advertising Privacy Terms Help Sitemap × Join millions of IT pros like you Log in to Spiceworks Reset community password Agree to Terms of Service Connect with Or Sign up with your email address First Name Last Name Email Join Now or Log In Email Password Log In Forgot your password? Email Reset Password Cancel Need to recover your Spiceworks IT Desktop password? By creating an account, you're agreeing to our Terms of Use, Privacy Policy and to receive emails from Spiceworks. By creating an account, you're agreeing to our Terms of Use, Privacy Policy and to receive emails from Spiceworks. Not a member? Join the community Back I agree Powerful tools you need, all for free. Help Desk » Inventory » Monitor » Community »
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Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Continue execution on Exception up vote 1 down vote https://community.spiceworks.com/topic/106857-powershell-equivalent-to-on-error-resume-next favorite Below is the script I want to execute. The issue here is once an exception occurs it stops executing, I used continue in the catch block but that did not work. How do I get it working even after an exception occurs it should loop in foreach. I also used a while($true) loop but that went into infinite loop. How to go about it? $ErrorActionPreference = "Stop"; http://stackoverflow.com/questions/16229582/continue-execution-on-exception try { # Loop through each of the users in the site foreach($user in $users) { # Create an array that will be used to split the user name from the domain/membership provider $a=@() $displayname = $user.DisplayName $userlogin = $user.UserLogin # Separate the user name from the domain/membership provider if($userlogin.Contains('\')) { $a = $userlogin.split("\") $username = $a[1] } elseif($userlogin.Contains(':')) { $a = $userlogin.split(":") $username = $a[1] } # Create the new username based on the given input $newalias = $newprovider + "\" + $username if (-not $convert) { $answer = Read-Host "Your first user will be changed from $userlogin to $newalias. Would you like to continue processing all users? [Y]es, [N]o" switch ($answer) { "Y" {$convert = $true} "y" {$convert = $true} default {exit} } } if(($userlogin -like "$oldprovider*") -and $convert) { LogWrite ("Migrating User old : " + $user + " New user : " + $newalias + " ") move-spuser -identity $user -newalias $newalias -ignoresid -Confirm:$false LogWrite ("Done") } } } catch { LogWrite ("Caught the exception") LogWrite ($Error[0].Exception) } Kindly help. powershell error-handling continue share|improve this question edited Apr 26 '13 at 8:24 Ansgar Wiechers 87k1165104 asked Apr 26 '13 at 5:51 Ishan 1,7542466115 Why not chang
Keith BabinecJune 9, 201320 Share 0 0 Today’s post (and this blog's inaugural post!) is An Introduction to Error Handling in PowerShell. We will discuss error https://blogs.msdn.microsoft.com/kebab/2013/06/09/an-introduction-to-error-handling-in-powershell/ types, the $error variable, error action preferences, try/catch blocks, and $lastexitcode. The first http://www.vexasoft.com/blogs/powershell/7255220-powershell-tutorial-try-catch-finally-and-error-handling-in-powershell requirement is to understand the types of errors that can occur during execution. Terminating vs. Non-Terminating Errors: Terminating Error: A serious error during execution that halts the command (or script execution) completely. Examples can include non-existent cmdlets, syntax errors that would prevent a cmdlet from running, or other fatal on error errors. Non-Terminating Error: A non-serious error that allows execution to continue despite the failure. Examples include operational errors such file not found, permissions problems, etc. Update 12/13/2013: Writing a cmdlet? For further information regarding how a cmdlet should determine when to throw a terminating error or non-terminating error, MSDN has a niceexplanationhere. Update 12/13/2013: Want to know if an error you on error next encountered is terminating or non-terminating? Check to see ifthe error behavioris affected by changing the$ErrorActionPreference. According to the MSDN documentation here, "Neither $ErrorActionPreference nor the ErrorAction common parameter affect how Windows PowerShell responds to terminating errors (those that stop cmdlet processing).". The $error variable: When either type of error occurs during execution, it is logged to a global variable called $error. This variable is a collection of PowerShell Error Objects with the most recent error at index 0. On a freshly initialized PowerShell instance (no errors have occurred yet) the $error variable is ready and waiting as an empty collection: PS C:\> $error.GetType() IsPublic IsSerial NameBaseType ----- ----- -------- TrueTrueArrayListSystem.Object PS C:\> $error.Count 0 In the next snippet I have executed a cmdlet that doesn’t exist, throwing an error. If we grab the count on $error, you will notice it has increased to one item. Dumping that object to the pipeline by accessing $error[0] just prints the error we already saw, right back at us. PS C:\> ThisCmdlet-DoesNotExist The term ‘ThisCmdlet-DoesNotExist' is not recognized as the name of a cmdlet
being able to handle errors helps to ensure that an unexpected event will not go on to wreck the system you are working on. Take the example below. Every week in our sample company (MyCompany.Com) Human Resources are going to upload a list telling us who should have access to the Expenses database. If a name isn’t in the list from HR we’re going to remove it from the group and that user will no longer be able to log expense claims: $AuthorizedUsers= Get-Content \\ FileServer\HRShare\UserList.txt $CurrentUsers=Get-ADGroupMember "Expenses Claimants" Foreach($User in $CurrentUsers) { If($AuthorizedUsers -notcontains $User) { Remove-ADGroupMember -Identity "Expenses Claimants" -User $User } } Now, you can see where this is going to go wrong. One week HR doesn’t get around to uploading the list or, just as we are about to access the list, the file server dies. Suddenly PowerShell throws an error on the Get-Content cmdlet and the $AuthorizedUser variable remains empty. Because our script doesn’t handle errors, it continues to run and, in a very short space of time, it has removed every user from our expenses group. Pretty soon the irate phone calls start flooding in and life gets a little less happy. The way to avoid all this is to catch the errors and then handle the event that caused them (which in this case is halt the script and have a shout at someone in HR). Terminating and Non-Terminating Errors One of the key things to know when catching errors is that only certain errors can be caught by default. Errors come in two types – terminating and non-terminating. A terminating error is an error that will halt a function or operation. If you make a syntax error or run out of memory, that is a terminating error. Terminating errors can be caught and handled. Non-terminating errors allow Powershell to continue and usually come from cmdlets or other managed situations. Under normal circumstances they cannot be caught by Try-Catch-Finally. The Get-Content error in the example above is a non-terminating error. Treating Non-Terminating Errors as Terminating So how do you catch a Non-Terminating error? Basically, you tell PowerShell to treat it as