Demos comparing Windows PowerShell and PowerShell Core 6

demo_winps_comparison.ps1

# Side-by-side

## Use PSCore6 w/ elevation

Invoke-WebRequest https://github.com/PowerShell/PowerShell/releases/download/v6.1.0/PowerShell-6.1.0-win-x64.zip -OutFile pwsh61.zip
Unblock-File pwsh61.zip
Expand-Archive pwsh61.zip

## PowerShell.exe vs Pwsh.exe

'$psversiontable' > demo.ps1
Powershell -c .\demo.ps1
Pwsh -c .\demo.ps1

## Performance

### ThreadJobs

Measure-Command { 1..10 | % { Start-Job { 1+1 } }; Get-Job | Wait-Job } 

Measure-Command { 1..10 | % { Start-ThreadJob { 1+1 } }; Get-Job | Wait-Job } 

### Write-Progress

#### Windows PowerShell

measure-command { Invoke-WebRequest https://github.com/PowerShell/PowerShell/releases/download/v6.1.0/PowerShell-6.1.0-win-x64.zip -OutFile pwsh1.zip }

#### PSCore 6

measure-command { Invoke-WebRequest https://github.com/PowerShell/PowerShell/releases/download/v6.1.0/PowerShell-6.1.0-win-x64.zip -OutFile pwsh2.zip }

### .NET Core 2.1

Invoke-WebRequest https://gist.githubusercontent.com/SteveL-MSFT/4907fc0d50025a784c787f64857b34f8/raw/92d30de7034ee39261c5ecfd3ef924c065579051/base64.ps1 -OutFile .\base64.ps1
Measure-Command { .\base64.ps1 }

### Group-Object

Measure-Command { 1..10000 | % {Get-Random -Minimum 1 -Maximum 1000} | Group-Object }

### Sort-Object

Measure-Command { 1..10000 | % {Get-Random -Minimum 1 -Maximum 1000} | Sort-Object }

### Import-Csv

$csv = get-process | convertto-csv; 1..5 | % { $csv += $csv }; $csv > ./process.csv
Get-Content .\process.csv | Measure-Object
Measure-Command { Import-Csv .\process.csv }

## Cmdlet improvments

### Update-Help without elevation

Update-Help Microsoft.PowerShell.Management

### Parent Process

get-process | ? { $_.parent } | Select-Object ProcessName, Parent

## Webcmdlets

### Getting response headers with Invoke-RestMethod

$r = Invoke-RestMethod https://api.github.com/repos/PowerShell/PowerShell/issues -ResponseHeadersVariable h
$h

### Link header pagination

$i = Invoke-RestMethod https://api.github.com/repos/PowerShell/PowerShell/issues
$i.count

$j = Invoke-RestMethod https://api.github.com/repos/PowerShell/PowerShell/issues -FollowRelLink -MaximumFollowRelLink 3
$j.count
$j.title.count

### Easy OAuth

$token = get-content ./token.txt | ConvertTo-SecureString -AsPlainText -Force
$r = Invoke-RestMethod https://api.github.com/repos/PowerShell/PowerShell/issues -Authentication OAuth -Token $token

## JSON cmdlets

### Formatting improvement

get-module psreadline | ConvertTo-Json

### -AsHashTable

'{ "" : "Test" }' | ConvertFrom-Json

### Roundtrip

'[ { "a" : "test" } ]' | ConvertFrom-Json | ConvertTo-Json

## Interactive console

### PSReadLine 2.0.0 Menu Complete

Get-Process -
[System.Diagnostics.Process]::

### Set-Location

cd $PSHOME
cd -

### Markdown rendering

Show-Markdown -Path ..\repos\PowerShell\README.md