Correctly Returning Exit Codes - Power Tips - Powershell.com – Powershell Scripts, Tips and Resources

Correctly Returning Exit Codes - Power Tips - Powershell.com – Powershell Scripts, Tips and Resources

Catching Errors - Power Tips - Powershell.com – Powershell Scripts, Tips and Resources

Catching Errors - Power Tips - Powershell.com – Powershell Scripts, Tips and Resources

Great tip on catching errors!

Execution Policy

While a necessary evil, Execution Policy can sometimes be a pain.

Here's a couple of alternatives to setting the execution policy to Unrestricted:

Powershell.exe –noprofile –executionpolicy bypass –file "C:\Scripts\myScript.ps1"

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1	Get-Content 'C:\Scripts\myScript.ps1' | powershell.exe -noprofile -

(The minus (-) is important!)

SSH.Net - Powershell

Thanks to SSH.Net lib, you can easily SSH into a linux server from powershell, upload/download files and run commands:
The following will create a folder in the users home called TestFolder, upload a file to that folder, then runs a command deleting teh folder:

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param(  [parameter(Mandatory = $true)] [string] $serverName,  [parameter(Mandatory = $true)] [string] $userName,  [parameter(Mandatory = $true)] [string] $password )   [Void][Reflection.Assembly]::LoadFrom(".\Renci.SshNet.dll") $sourceFile = "c:\Scripts\test.txt" $destFile = "test.txt" $destFolder = "/home/$userName/TestFolder" $sshclient = New-Object Renci.SshNet.SshClient($serverName,$userName,$password ) $sshclient.Connect() if ($sshclient.IsConnected){  $sftp = New-Object Renci.SshNet.SftpClient($sshclient.ConnectionInfo)  $sftp.Connect()  if ($sftp.IsConnected){   if (!$sftp.Exists($destFolder)){    $sftp.CreateDirectory($destFolder)   }   $sftp.ChangeDirectory($destFolder)   $sftp.UploadFile([System.IO.File]::OpenRead($sourceFile), $destFile)   write-host "File Exists " $([bool](($sftp.ListDirectory(".") | select Name) -match "test.txt"))   $sftp.Disconnect()      }  $o = $sshclient.RunCommand("rm /home/$userName/TestFolder -R")  $o.Result  $sshclient.Disconnect() }

Match string between same delimiters multiple times

Been looking for something like this for a while...

I had a string similar to below:

"thisis%a%%test%string%which%should%will%possibly%work%"

and needed to extract the text between the "%"'s, but not between the end "%" and the next starting "%".

Using regular expressions (in powershell), the following pattern will work:

"%[^%]*?(|).*?%"

The "?" after each "*" allows for greediness(multiple text blocks in the string)

Complete code:

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1 2	[regex]$r = "%[^%]*?(|).*?%" $r.Matches("thisis%a%%test%string%which%should%will%possibly%work%") | %{$_.Value}

The following is matched:
%a%
%test%
%which%
%will%
%work%
While the following is ignored:
%string%
%should%
%possibly%