Powershell Script On Error Resume
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Lealthy - Android App Health-App with which the users can share and plan their eating- and physical-activities Website built and Hosted .. at home Building a website for my father-in-laws trap exception in powershell business. Hoping to use this as a stepping stone toward building/creating more websites for $erroractionpreference = 'continue' business owners in my area. TECHNOLOGY IN THIS DISCUSSION Join the Community! Creating your account only takes a few minutes. Join Now
Powershell Ignore Errors Continue
Hey all, i am looking for the equivalent to the vbscript on error resume next for powershell here is my for loop its reading a list of programs and running through them to uninstall but some
Powershell Erroraction Silentlycontinue
computers have some and some dont so i when it errors on that i want it to continue through the ps1 script. foreach ($compname in $component){ $app = Get-WmiObject -ComputerName $strComputer -Credential $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 Answer Martin9700 powershell -erroraction silentlycontinue not working 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 $ErrorActionPreference earlier and it wasn't working for my script but setting up a trap did thanks for the info! 0 This discussion has been inactive for over a year. You may get a better answer to your question by starting a new discussion. Text Quote Post |Replace Attachment Add link Text to display: Where should this link go? Add Cancel × Insert code Language Apache AppleScript Awk BASH Batchfile C C++ C# CSS ERB HTML Java JavaScript Lua ObjectiveC PHP Perl Text Powershell Python R Ruby Sass Scala SQL VB.net Vimscript XML YAML Insert Cancel Join me to this group Reply × Users who spiced this post Read these next... © Copyright 2006-2016 Spiceworks Inc. About Advertising Privacy Terms Help Sitemap × Join millions of IT pros like you Log in to Spiceworks Reset community password Agree to Terms of Service Connect with Or Sign up with your email address First Name Last Name Email Join Now or Log In E
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Continue On Error Powershell
about Stack Overflow the company Business Learn more about hiring developers or posting ads powershell if error with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow powershell errorvariable is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Continue execution on Exception up vote 1 down vote favorite Below is https://community.spiceworks.com/topic/106857-powershell-equivalent-to-on-error-resume-next the script I want to execute. The issue here is once an exception occurs it stops executing, I used continue in the catch block but that did not work. How do I get it working even after an exception occurs it should loop in foreach. I also used a while($true) loop but that went into infinite loop. How to go about it? $ErrorActionPreference = "Stop"; try { # Loop through http://stackoverflow.com/questions/16229582/continue-execution-on-exception each of the users in the site foreach($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 87.1k1165104 asked Apr 26 '13 at 5:51 Ishan 1,7542466115 Why not change $ErrorActionPreference = "Continue" ? Doesn't work for you?
functions. The next area where Powershell suprises new users is in its approach to error handling. Fortunately, there are some useful workarounds http://patrick.lioi.net/2011/08/16/avoiding-on-error-resume-next-when-using-powershell/ for making the surprising default behavior work more like you would expect. While learning Powershell, I was trying to create a deployment script. The script needed to perform several http://jameskovacs.com/2010/02/25/the-exec-problem/ tasks including, copying the deployment package to the target machine, setting up services, and the like. While testing it out locally, I would deliberately cause certain steps to fail in order on error to ensure that the user of the script would be clearly alerted to failures. To my surprise, when I caused exceptions to be thrown, the script would happily continue on to the next step, ultimately printing a success message to the user. Consider this example: What the heck just happened? If you can't rely on uncaught exceptions to stop powershell script on execution, how can you reliably deal with failures? What if we throw an exception and then blindly move along to a subsequent step that depends on the success of previous steps? Powershell reintroduces VB's "ON ERROR RESUME NEXT", but goes one step further by making it the default! Abandon all hope, ye who etc, etc. To make Powershell error handling work more like error handling in other .NET languages, we can set $global:ErrorActionPreference = "Stop" at the start of our script. With this variable set, uncaught exceptions thrown by Powershell code will cause the whole script to stop. Altering our example with this line, we get the output that we originally expected: This solves most of our problem: the behavior of Powershell code that throws errors. Unfortunately, it doesn't help us when we invoke an external executable that fails in the middle of our script. In my next post, I'll show you how to address the failure of external executables. @plioi :: archive :: fixie :: parsley :: rook © 2011-2013 Patrick Lioi
errors, which is to continue on error. It feels very VB6 “On Error Resume Next”-ish. Given that it is a shell scripting language, I can understand why the PowerShell team chose this as a default. Fortunately you can change the default by setting $ErrorActionPreference = ‘Stop’, which terminates execution by throwing an exception. (The default value is Continue, which means the script prints the error and continues executing.) Unfortunately this only works for PowerShell commands and not external executables that return non-zero error codes. (In the shell world, a return code of zero (0) indicates success and anything else indicates failure.) Take the following simple script: 'Starting script...' $ErrorActionPreference = 'Stop' ping -badoption "Last Exit Code was: $LastExitCode" rm nonexistent.txt 'Finished script' Notice how execution continued after the ping command failed with an exit code of one (1) even though we have $ErrorActionPreference set to ‘Stop’. Also notice that the rm command, which is an alias for the PowerShell command, Remove-Item, did cause execution to abort as expected and ‘Finished script’ was never printed to the console. The discrepancy in error handling between PowerShell commands and executables is annoying and forces us to constantly think about what we’re calling – a PowerShell command or an executable. The obvious solution is: 'Starting script...' $ErrorActionPreference = 'Stop' ping -badoption if ($LastExitCode -ne 0) { throw 'An error has occurred...' } rm nonexistent.txt 'Finished script' The error handling code adds a lot of noise, IMHO, and feels like a throwback to COM and HRESULTs. Can we do better? Jorge Matos, one of the psake contributors came up with this elegant helper function: function Exec([scriptblock]$cmd, [string]$errorMessage = "Error executing command: " + $cmd) { & $cmd if ($LastExitCode -ne 0) { throw $errorMessage } } Note the “& $cmd” syntax. $cmd is a scriptblock and & is used to execute the scriptblock. We can now re-write our original script as follows. (N.B. Exec function is elided for brevity.) 'Starting script...' $ErrorActionPreference = 'Stop' exec { ping -badoption } rm nonexistent.txt 'Finished