# take any path
# in this example, I am taking the path where Powershell 7 is installed
# this requires that PowerShell 7 in fact is installed.
# You can use any other path as well
$path = (Get-Command -Name pwsh).Source

"Long path: $path"

# convert it to 8.3 short name
$shortPath = (New-Object -ComObject Scripting.FileSystemObject).GetFile($path).ShortPath
"Short path: $shortPath"

PS> (Get-Process -Id $pid).Path
C:\Program Files\PowerShell\7\pwsh.exe

PS C:\> (Get-Command -Name pwsh).Source
C:\Program Files\PowerShell\7\pwsh.exe

# by default, -? opens LOCAL help
PS> dir -?

NAME
    Get-ChildItem

SYNOPSIS
    Gets the items and child items in one or more specified locations.


SYNTAX
...


# with this line you tell PowerShell to use the ONLINE help by default
PS> $PSDefaultParameterValues.Add("Get-Help:Online",$true)

# now, whenever you use -?, the ONLINE help opens in a nicely formatted browser window
PS> dir -?

# this fails when help defaults to show ONLINE help
PS> help about_for
Get-Help : The online version of this Help topic cannot be displayed because the Internet address (URI) of the Help topic is not specified in the command code or in the help file for the command.

# the -ShowWindow parameter always shows local help in an extra window
PS C:\> help about_for -ShowWindow

# outputs help in same console window
# level of detail depends on whether local help was
# downloaded using Update-Help
PS C:\> help -Name Get-Process

NAME
    Get-Process

SYNOPSIS
    Gets the processes that are running on the local computer or a remote computer.


SYNTAX
    Get-Process [[-Name] <String[]>] [-ComputerName <String[]>] [-FileVersionInfo] [-Module] []
    ...

# opens help in separate browser window
PS> help -Name Get-Process -Online

PS> Update-Help -Verbose
VERBOSE: Resolving URI: "https://go.microsoft.com/fwlink/?LinkId=717973"
VERBOSE: Your connection has been redirected to the following URI:
"https://pshelpprod.blob.core.windows.net/cabinets/powershell-5.1/"
VERBOSE: Performing the operation "Update-Help" on target "Microsoft.PowerShell.LocalAccounts, Current Version: 5.2.0.0, Available Version: 5.2.0.0, UICulture: en-US".
VERBOSE: Microsoft.PowerShell.LocalAccounts: Updated C:\Users\USERNAME\Dokumente\PowerShell\Help\Microsoft.PowerShell.LocalAccounts\1.0.0.0\en-US\Microsoft.Powershell.LocalAccounts.dll-Help.xml. Culture en-US Version 5.2.0.0
VERBOSE: Resolving URI: "https://go.microsoft.com/fwlink/?linkid=2113632"
VERBOSE: Your connection has been redirected to the following URI: "https://pshelp.blob.core.windows.net/powershell/help/7.0/Microsoft.PowerShell.Management/"
VERBOSE: Performing the operation "Update-Help" on target "Microsoft.PowerShell.Management, Current Version: 7.0.1.0, Available Version: 7.0.1.0, UICulture: en-US".
VERBOSE: Microsoft.PowerShell.Management: Updated C:\Users\USERNAME\Dokumente\PowerShell\Help\en-US\Microsoft.PowerShell.Commands.Management.dll-Help.xml. Culture en-US Version 7.0.1.0
...

PS> Get-Process -?

NAME
    Get-Process

SYNOPSIS
    Gets the processes that are running on the local computer or a remote computer.
...

# calculate the parent paths that can contain profile scripts
$Paths = @{
    AllUser_WPS = $pshome
    CurrentUser_WPS = Join-Path -Path ([Environment]::GetFolderPath('MyDocuments')) -ChildPath "WindowsPowerShell"
    AllUser_PS = "$env:programfiles\PowerShell\*"
    CurrentUser_PS = Join-Path -Path ([Environment]::GetFolderPath('MyDocuments')) -ChildPath "PowerShell"
}

# check all paths for PowerShell scripts ending on "profile.ps1"
$Paths.Keys | ForEach-Object {
    $key = $_
    $path = Join-Path -Path $paths[$key] -ChildPath '*profile.ps1'
    Get-ChildItem -Path $Path |
        ForEach-Object {
        # create a custom object with all relevant details for any
        # found profile script

        # name of PowerShell host is the prefix of profile file name
        if ($_.Name -like '*_*')
        {
            $hostname = $_.Name.Substring(0, $_.Name.Length-12)
        }
        else
        {
            $hostname = 'any'
        }
        [PSCustomObject]@{
            # scope and PowerShell version is found in the
            # name of the parent folder
            Scope = $key.Split('_')[0]
            PowerShell = $key.Split('_')[1]

            Host = $hostname
            Path = $_.FullName
        }
        }
}

$profile.PSObject.Properties.Name | Where-Object { $_ -ne 'Length' } | ForEach-Object { [PSCustomObject]@{Profile=$_; Present=Test-Path $profile.$_; Path=$profile.$_}}

PS> $profile | Select-Object -Property *

AllUsersAllHosts       : C:\Windows\System32\WindowsPowerShell\v1.0\profile.ps1
AllUsersCurrentHost    : C:\Windows\System32\WindowsPowerShell\v1.0\Microsoft.PowerShellISE_profile.ps1
CurrentUserAllHosts    : C:\Users\tobia\OneDrive\Dokumente\WindowsPowerShell\profile.ps1
CurrentUserCurrentHost : C:\Users\tobia\OneDrive\Dokumente\WindowsPowerShell\Microsoft.PowerShellISE_profile.ps1
Length                 : 87

PS> $env:USERPROFILE
C:\Users\tobia

PS> $HOME
C:\Users\tobia

PS> $profile
C:\Users\tobia\OneDrive\Documents\WindowsPowerShell\Microsoft.PowerShellISE_profile.ps1

PS>

PS> [Environment]::GetFolderPath('MyDocuments')
C:\Users\tobia\OneDrive\Documents

$redirected = [Environment]::GetFolderPath('MyDocuments') -like '*\OneDrive\*'
$redirected

Get-WinEvent -FilterHashtable @{Logname = 'System';Level=2,3} -MaxEvents 10 |
    Select-Object TimeCreated, LevelDisplayName, Id, ProviderName, Message |
    Format-Table