My PowerShell Core profile. Random quote, green/red prompt depending on admin rights, cleaner path for Registry / UNC.

Microsoft.PowerShell_profile.ps1

Import-Module Terminal-Icons

function prompt
{
    $identity = [Security.Principal.WindowsIdentity]::GetCurrent()
    $principal = [Security.Principal.WindowsPrincipal] $identity
    $adminRole = [Security.Principal.WindowsBuiltInRole]::Administrator

    $ESC = [char]27
    $promptColor = $principal.IsInRole($adminRole) ? "$ESC[91m" : "$ESC[92m"
    "${promptColor}PS$ESC[0m $(Get-Location | Convert-Path)$('>' * ($nestedPromptLevel + 1)) "
}

function writeQuote($width)
{
    $docpath = [environment]::GetFolderPath('MyDocuments')
    $quote = Get-Random -InputObject (Get-Content $docpath\PowerShell\quotes.txt | where {$_ -notlike '#*'})
    # Write-Host $quote -ForegroundColor Cyan

    $words = $quote -split "\s+"
    $col = 0
    foreach ( $word in $words )
    {
        $col += $word.Length + 1
        if ( $col -gt $width )
        {
            Write-Host ""
            $col = $word.Length + 1
        }
        Write-Host -NoNewline "$word " -Foreground Cyan
    }
    Write-Host ""
}

$PSVersionTable.OS
"PowerShell $($PSVersionTable.PSEdition) $($PSVersionTable.PSVersion)"

Write-Host ""
writeQuote(75)
Write-Host ""