code highlighting and cert validation skip

Products/powershell.md

@@ -6,7 +6,7 @@ Ways to Stop a Script or Contents
 
 Store Output Streams to Variable
 - Add $ to InfoFar and ErrorVar if you want the Information and Errors to NOT be sent down the pipeline.
-```
+```ps
 $InfoVar
 $ErrorVar
 $FullOutput
@@ -24,7 +24,7 @@ if ($ErrorsVar.Count -ne 0) {
 
 Timeout a Command
 Use this to effectively assign a timeout to any command or command block.
-```
+```ps
 Start-Job {                
     hostname
 } | Wait-Job -Timeout 3 | Receive-Job
@@ -33,24 +33,24 @@ Start-Job {
 
 # Arrays
 Add a property to each item in arrray
-```
+```ps
 foreach ($Item in $Array) {
     $Item | Add-Member -MemberType NoteProperty -Name "ANewProperty" -Value $AVariable
 }
 ```
 
 Deduplicate An Array of Objects By Selecting Only the Latest Date
-```
+```ps
 $UniqueList = $completelist | Group-Object -Property ID | ForEach-Object{$_.Group | Sort-Object -Property StartTime -Descending | Select-Object -First 1}
 ```
 
 Merge Two Arrays
-```
+```ps
 $MergedArray = $Array1 + $Array2
 ```
 
 Group On Multiple Fields, then Restore Those Field Values
-```
+```ps
 $GroupedStuff = $Things | Group-Object Host,DateScanned,UserName
 ForEach ($Result in $GroupedStuff) {
     $fields = $Result.name -split ', '
@@ -61,21 +61,21 @@ ForEach ($Result in $GroupedStuff) {
 ```
 
 Compare two arrays to determine if equal
-```
+```ps
 [Collections.Generic.SortedSet[String]]::CreateSetComparer().Equals($FirstArray,$SecondArray)
 ```
 
 # Hashtables
 Sort A Hashtable by Key Name
-```
+```ps
 $myHashtable.GetEnumerator() | Sort-Object Key
 ```
 
 
 
 # Files and Directories
 Remove Empty Directories Recursively
-```
+```ps
 Get-ChildItem $Destination -Directory -Recurse |
     Foreach-Object { $_.FullName} |
         Sort-Object -Descending |
@@ -84,19 +84,19 @@ Get-ChildItem $Destination -Directory -Recurse |
 ```
 
 Force Get-Childitem to NOT pull Windows directory or Program Files directories.
-```
+```ps
 Get-ChildItem c:\ -Depth 0 -Directory | Where-Object {$_.Name -notmatch "windows|Program Files|Program Files \(x86\)"} | Get-Childitem -Recurse
 ```
 
 Merge CSV files
-```
+```ps
 Get-ChildItem *.csv | Select-Object name -ExpandProperty name | Import-Csv | export-csv -NoTypeInformation merged.csv
 ```
 
 # Script Meta
 ## Parameters
 Validate the provided path
-```
+```ps
 ...
 [Parameter()]
 [ValidateScript({Test-Path $_})]
@@ -105,7 +105,7 @@ Validate the provided path
 ```
 
 A nicer, fuller version
-```
+```ps
 ...
 [ValidateScript({
     try {
@@ -124,7 +124,7 @@ A nicer, fuller version
 
 
 Make a parameter mandatory
-```
+```ps
 ...
 [Parameter(mandatory=$true)]
 [ValidateScript({Test-Path $_})]
@@ -135,7 +135,7 @@ Make a parameter mandatory
 
 # Misc
 Convert .json file to PowerShell objects
-```
+```ps
 $file = "file.json"
 $json = Get-Content $file | ConvertFrom-Json
 $json
@@ -145,28 +145,28 @@ $records
 ```
 
 Run an encoded command
-```
+```ps
 $Command = 'Get-Service BITS' 
 $Encoded = [convert]::ToBase64String([System.Text.encoding]::Unicode.GetBytes($command)) 
 powershell.exe -encoded $Encoded
 ```
 
 Convert plain text to base64
-```
+```ps
 $Text = 'This is a secret and should be hidden'
 $Bytes = [System.Text.Encoding]::Unicode.GetBytes($Text)
 $EncodedText = [Convert]::ToBase64String($Bytes)
 $EncodedText
 ```
 
 Convert base64 to plain text
-```
+```ps
 $base64_string = "VABoAGkAcwAgAGkAcwAgAGEAIABzAGUAYwByAGUAdAAgAGEAbgBkACAAcwBoAG8AdQBsAGQAIABiAGUAIABoAGkAZABkAGUAbgA="
 [System.Text.Encoding]::Default.GetString([System.Convert]::FromBase64String($base64_string))
 ```
 
 Fix $ScriptRoot so its the same whether in ISE or regular Powershell console.
-```
+```ps
 if ($psISE) {
     $ScriptRoot = Split-Path -Path $psISE.CurrentFile.FullPath -Parent
 } else {
@@ -177,14 +177,14 @@ if ($psISE) {
 
 Opens Powershell ISE as administrator under alternate credentials. 
 *Window will show Administrator:, but with alternate administrative credentials. Often necessary where least privilege is desired, like logging in as user, then elevating to an administrator with Runas.*
-```
+```ps
 $Account = "domain\service_account"
 $Credential = Get-Credential $Account
 Start-Process $PsHome\powershell.exe -Credential $Credential -ArgumentList "-Command Start-Process $PSHOME\powershell_ise.exe -Verb Runas" -Wait
 ```
 
 Grant access to specific files in a privileged user profile relatively safely.
-```
+```ps
 $path = "C:\Users\Administrator\Desktop"
 $path = "C:\Users\Administrator\Downloads"
 $path = "C:\Users\Administrator\Documents"
@@ -200,7 +200,7 @@ Try Catch Errors Template
 - When debugging, you can use ```$Error[-1] | Select-Object *``` to see the details of the last error thrown.
 - Use the value of ```$Error[0].Exception.GetType().FullName``` in the catch square brackets [] as shown below.
 - Use the value of ```$Error[0].Exception.Message``` to match on the first line of the error presented.
-```
+```ps
 try { 
     yourcode
 }
@@ -223,7 +223,7 @@ catch { # catch all remaining errors and provide info to capture them specifical
 
 
 Assign a Variable via Switch
-```
+```ps
 $day = 3
 
 $result = switch ( $day )
@@ -242,7 +242,7 @@ $result.GetType()
 ```
 
 Assign a Variable an Array or String via Switch
-```
+```ps
 $day = "Friday"
 
 $result = switch ( $day )
@@ -261,7 +261,7 @@ $result.GetType()
 
 
 Add a Hashtable as Properties to an Existing Object
-```
+```ps
 # Create a hashtable of properties
 $newProperties = @{
     City = "New York"
@@ -272,4 +272,22 @@ $newProperties = @{
 foreach ($key in $newProperties.Keys) {
     $myObject | Add-Member -MemberType NoteProperty -Name $key -Value $newProperties[$key]
 }
+```
+
+
+Skip certificate validation checks (use only for known-good self-signed certs)
+```ps
+# Trust all certificates (use if self-signed cert is being used
+add-type @"
+using System.Net;
+using System.Security.Cryptography.X509Certificates;
+public class TrustAllCertsPolicy : ICertificatePolicy {
+    public bool CheckValidationResult(
+        ServicePoint srvPoint, X509Certificate certificate,
+        WebRequest request, int certificateProblem) {
+        return true;
+    }
+}
+"@
+[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
 ```