PowerShell Errors and Exceptions Handling
Ғылым және технология
Learn how to handle PowerShell Errors and Exceptions. See how to recognize and deal with non-terminating and terminating PowerShell errors. Take control and handle various errors with try catch. Explore rich PowerShell error objects and see how to drill down into error properties. Wrap up with a practical example where you can provide better feedback to your users when your PowerShell code encounters the unexpected.
Corresponding TechThoughts write-up:
www.techthoughts.info/powersh...
▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬
00:00 - Intro
00:27 - PowerShell has two pipelines
01:18 - Understanding PowerShell's non-terminating behavior
04:31 - Forcing errors to terminate in PowerShell
06:21 - Try / Catch intro
09:13 - Try / Catch with ErrorAction
14:26 - Try / Catch / Finally
15:23 - PowerShell rich error object
20:48 - Example 2 rich error object
21:57 - PowerShell error variable
23:21 - Final Example
27:22 - Outro
Learn PowerShell - Episode 8 - PowerShell Errors and Exceptions Handling
Reference PowerShell code examples from this episode:
github.com/techthoughts2/Lear...
Check out the complete Learn PowerShell KZread Playlist:
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Пікірлер: 39
We can say that it was an exceptional tutorial
2 Years later and this was still perfect! made it simple to understand, and exactly what i needed. Thank you.
Probably the clearest and most concise tutorial I've seen on Powershell. Who is this guy?
@NancyRileyNuniverse
3 жыл бұрын
Agreed. There are some more well known folks that make these videos and I feel like they just joke and never get to the meat of what we need, immediately. This gentleman rocks at training!!!
These videos are pure gold. Thank you!
This is tremendously helpful. As a student who is used to buying Udemy courses this free course it's the rough equivalent of finding a wallet full of cash on the middle of the road. Great job :)
@piggiesgosqueal8066
2 жыл бұрын
"It's a steal"
One of the best resources for 'Exception Handling in PowerShell'. Thanks a lot!
This really is an exceptional video. I have been trying to catch on to how to work with errors and I believe I finally have it!!! Thanks so much - seriously, keep making videos!!!!
Very good flow and clear explanations! Excellent!
Very helpful, thank you for your deep and knowledgeable explanations.
Thanks a lot for your effort and sharing the knowledge for free!
This is exactly what I needed answers for, and more. You are awesome! Thank you.
Thanks! Very useful.
Great Video!
Great Explanation! Thank you for the excellent class
@Techthoughts2
4 жыл бұрын
Glad it was helpful!
Really well explained
Thank you so much for this wonderful tutorial :) I subscribed
excellent..clearly explained...
Amazing Amazing Amazing... Excellent
@Techthoughts2
4 жыл бұрын
Thank you so much 😀
Excellent series, will you be doing more?
@Techthoughts2
4 жыл бұрын
Absolutely! Stay tuned!
Very good
buen tutorial de power shell
So good knowledge in general, however I do not recommend changing the -erroraction to stop because as you said, that defeats the entire purpose of Powershell, you don't want your program to stop because of one thing it didnt find. Your are better off -ErrorAction SilentlyContinue and then capture that if statement on the object and handle the output based if the object actually returned or not. # PowerShell -ErrorAction SilentlyContinue example Clear-Host $SrvName = "Printer Spooler" $Service = Get-Service -display $SrvName -ErrorAction SilentlyContinue if (-Not $Service) {$SrvName + " is NOT installed check the name."} else {$SrvName + " is installed." $SrvName + "'s status is: " + $service.Status } which is better because it lets you actually handle the error as you want, if it is a foreach loop, you can do a continue and it will skip the object and go to the next one in the loop. Finally, you can set your preference for -ErrorAction by setting this variable in your script (the default is continue - which will give an error on the screen but will continue the script). You can change that to stop or SilentlyContinue. $ErrorActionPreference = "SilentlyContinue"
Hello, techThoughts Thank you for your tutorial first. I have a question that can we use the powershell to maniplate the website for automatic purpose (like login an user account, and then download something in a webpage).
@Techthoughts2
Жыл бұрын
Yes, check out Selenium: github.com/adamdriscoll/selenium-powershell
hey, thanks for creating great videos, they are very easy to understand. as far as I have understood the default -erroraction in Continue, but for below code its sop, could you please have a look. try{ $a = 1/0 $a Get-Process } catch{ Write-Warning "This is a warning " }
@Techthoughts2
4 жыл бұрын
When more basic errors (non-cmdlet) like math operations, syntax, and others are wrapped in a try/catch this tells PowerShell to switch the behavior of those errors to stop. It will then go to the catch. Your $a = 1/0 is a math operation error in a try/catch, so the behavior will be stop. If that same operation were outside of the try/catch it would be continue.
6:44 Line number 20. What is the use of semicolon there? is it kind of terminating character for an expression like in c/c++?
Could some elaborate a bit on why inputting '1/0' changed the array stored as 0?
Hello, I just transferred my script to Powershell version 2 on a windows server, however it is somehow not recognizing the objects Exception.Message from variable $Error, would you be able to advice? Checking on format-list and Get-Member though, it should be listed
Hi, could you tell me how to written error codes
HOW CAN I FIX THIS ERROR ??? Windows PowerShell is not properly responding. check if it is working, and not locked in Constrained Language Mode.
how to catch errors in CSV if we are checking lst reboot time of remote servers by using: Get-CimInstance -classname win32_operatingsystem -property * -computername $servers -ErrorAction Stop | select csname,lastBootupTime,Caption | Out-File $log
Insane, it was easier to found how to catch and output error on terminal than actually printing the process in the terminal. I hate powershell, the docs are garbage.
These videos are pure gold. Thank you!