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wsl --shutdown
diskpart
# open window Diskpart
select vdisk file="C:\WSL-Distros\…\ext4.vhdx"
attach vdisk readonly
compact vdisk
detach vdisk
exit

import timeit


def adder(x, y):
	return x + y


t = timeit.Timer(setup='from __main__ import adder', stmt='adder(10, 20)')
t.timeit()

# WSL2 network port forwarding script v1
#   for enable script, 'Set-ExecutionPolicy -ExecutionPolicy Bypass -Scope CurrentUser' in Powershell,
#   for delete exist rules and ports use 'delete' as parameter, for show ports use 'list' as parameter.
#   written by Daehyuk Ahn, Aug-1-2020

# Display all portproxy information
If ($Args[0] -eq "list") {
    netsh interface portproxy show v4tov4;
    exit;
} 

# If elevation needed, start new process
If (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator))
{
  # Relaunch as an elevated process:
  Start-Process powershell.exe "-File",('"{0}"' -f $MyInvocation.MyCommand.Path),"$Args runas" -Verb RunAs
  exit
}

# You should modify '$Ports' for your applications 
$Ports = (22,80,443,8080)

# Check WSL ip address
wsl hostname -I | Set-Variable -Name "WSL"
$found = $WSL -match '\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}';
if (-not $found) {
  echo "WSL2 cannot be found. Terminate script.";
  exit;
}

# Remove and Create NetFireWallRule
Remove-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock';
if ($Args[0] -ne "delete") {
  New-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' -Direction Outbound -LocalPort $Ports -Action Allow -Protocol TCP;
  New-NetFireWallRule -DisplayName 'WSL 2 Firewall Unlock' -Direction Inbound -LocalPort $Ports -Action Allow -Protocol TCP;
}

# Add each port into portproxy
$Addr = "0.0.0.0"
Foreach ($Port in $Ports) {
    iex "netsh interface portproxy delete v4tov4 listenaddress=$Addr listenport=$Port | Out-Null";
    if ($Args[0] -ne "delete") {
        iex "netsh interface portproxy add v4tov4 listenaddress=$Addr listenport=$Port connectaddress=$WSL connectport=$Port | Out-Null";
    }
}

# Display all portproxy information
netsh interface portproxy show v4tov4;

# Give user to chance to see above list when relaunched start
If ($Args[0] -eq "runas" -Or $Args[1] -eq "runas") {
  Write-Host -NoNewLine 'Press any key to close! ';
  $null = $Host.UI.RawUI.ReadKey('NoEcho,IncludeKeyDown');
}

# A memory leak can occur in your application when an element is no longer attached to the Document Object Model (DOM) tree, but is still referenced by some JavaScript running on the page. These elements are called detached elements.
[https://docs.microsoft.com/en-us/microsoft-edge/devtools-guide-chromium/memory-problems/dom-leaks]
 
 
 a reference to an object will prevent the object referenced from being garbage collected.
 [https://developer.chrome.com/docs/devtools/memory-problems/memory-101/]
 
 
 # window leaks
 variables set on the window do not get collected
 - windwo.myvar = 'whatever'
 [https://medium.com/coding-blocks/catching-memory-leaks-with-chrome-devtools-57b03acb6bb9]

import cProfile

# Use `profile` if `cProfile` isn't available on your OS
# import profile


def adder(x, y):
	return x + y


cProfile.run('adder(10, 20)')

Get-ChildItem -Path C:\ -Recurse -File -ErrorAction SilentlyContinue | Where-Object { $_.Length -gt 100MB } | Sort-Object Length -Descending | Select-Object FullName, Length | Format-Table -AutoSize

Get-ChildItem -Path C:\ -Recurse -File -ErrorAction SilentlyContinue |
    Where-Object { $_.Length -gt 100MB } |
    Sort-Object Length -Descending |
    Select-Object @{Name='FullName'; Expression={$_.FullName}},
                  @{Name='Size (MB)'; Expression={[math]::Round($_.Length / 1MB, 2)}} |
    Format-Table -AutoSize

FullName                                           Size (MB)
--------                                           ----------
C:\some\path\to\largefile1.ext                      123.45
C:\another\path\to\largefile2.ext                   110.98

Get-ChildItem -Path C:\ -Recurse -File -ErrorAction SilentlyContinue |
    Where-Object { $_.Length -gt 100MB } |
    Sort-Object Length -Descending |
    Select-Object @{Name='FullName'; Expression={$_.FullName}},
                  @{Name='Size'; Expression={
                      if ($_.Length -ge 1GB) {
                          [math]::Round($_.Length / 1GB, 2) + ' GB'
                      } elseif ($_.Length -ge 1MB) {
                          [math]::Round($_.Length / 1MB, 2) + ' MB'
                      } else {
                          [math]::Round($_.Length / 1KB, 2) + ' KB'
                      }
                  }} |
    Format-Table -AutoSize


FullName                                           Size 
--------                                           ----------
C:\some\path\to\largefile1.ext                      123.45 MB
C:\another\path\to\largefile2.ext                   110.98 MB

> powershell -command "Get-ChildItem -Path C:\ -Recurse | Sort-Object Length -Descending | Select-Object FullName, Length -First 20 | Format-Table -AutoSize";

[PSCustomObject]$param = [PSCustomObject](Get-Content .\parameters.json | Out-String | ConvertFrom-Json)

class TrustAll : System.Net.ICertificatePolicy 
{
  [bool]CheckValidationResult([System.Net.ServicePoint]$sp, [System.Security.Cryptography.X509Certificates.X509Certificate]$cert, [System.Net.WebRequest]$request, [int]$problem)
  {
    return $true
  }
}

[System.Net.ServicePointManager]::CertificatePolicy = [TrustAll]::new()

Get-ChildItem -Path bin -Recurse | Remove-Item -Recurse -Force -Verbose
Get-ChildItem -Path obj -Recurse | Remove-Item -Recurse -Force -Verbose