I’m looking for the PowerShell equivalent to grep –file=filename. If you don’t know grep, filename is a text file where each line has a regular expression pattern you want to match. Maybe I’m missing something obvious, but Select-String doesn’t seem to have this option. 9 Answers 9
There are a number of different ways to output messages. What is the effective difference between outputting something via Write-Host, Write-Output, or [console]::WriteLine? I also notice that if I use: write-host “count=” + $count The + gets included in the output. Why’s that? Shouldn’t the expression be evaluated to produce a single concatenated string before … Read more
I would like to calculate an MD5 checksum of some content. How do I do this in PowerShell? 19 Answers 19
What would a PowerShell script be to return versions of the .NET Framework on a machine? My first guess is something involving WMI. Is there something better? It should be a one-liner to return only the latest version for each installation of .NET [on each line]. 17 Answers 17
I’ve found some interesting behaviour in PowerShell Arrays, namely, if I declare an array as: $array = @() And then try to add items to it using the $array.Add(“item”) method, I receive the following error: Exception calling “Add” with “1” argument(s): “Collection was of a fixed size.” However, if I append items using $array += … Read more
If I have an instance of PowerShell ISE running and I install something that modifies the PATH or I modify it in any way outside of PowerShell then I need to restart PowerShell for it to see the updated PATH variable. Is there a way to reload the path from within PowerShell without restarting it? … Read more
I would like to delete only the files that were created more than 15 days ago in a particular folder. How could I do this using PowerShell? 10 Answers 10
I have developed a PowerShell function that performs a number of actions involving provisioning SharePoint Team sites. Ultimately, I want the function to return the URL of the provisioned site as a String so at the end of my function I have the following code: $rs = $url.ToString(); return $rs; The code that calls this … Read more
I can express my need with the following scenario: Write a function that accepts a string to be run as a native command. It’s not too far fetched of an idea: if you’re interfacing with other command-line utilities from elsewhere in the company that supply you with a command to run verbatim. Because you don’t … Read more
I’d like to run an external process and capture it’s command output to a variable in PowerShell. I’m currently using this: $params = “/verify $pc /domain:hosp.uhhg.org” start-process “netdom.exe” $params -WindowStyle Hidden -Wait I’ve confirmed the command is executing but I need to capture the output into a variable. This means I can’t use the -RedirectOutput … Read more
