In Unix/Linux systems, sudo !! is an incredibly useful shortcut that:

• Re-executes the previous command with elevated privileges
• Saves typing when you forget to prepend sudo
• Works across most *nix shells including bash, zsh, etc.

While PowerShell doesn't have an exact single-command equivalent, we can achieve similar functionality through several approaches:

Method 1: Start-Process with -Verb RunAs

# Store last command in variable
$lastCommand = (Get-History -Count 1).CommandLine

# Execute with elevation
Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit", "-Command", $lastCommand

Method 2: Custom Function in Profile

Add this to your $PROFILE for permanent access:

function sudo-last {
    $cmd = (Get-History -Count 1).CommandLine
    Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit", "-Command", $cmd
}

Method 3: Using PSReadLine (PowerShell 5.1+)

# After installing PSReadLine module
function Invoke-SudoLast {
    $lastCmd = [Microsoft.PowerShell.PSConsoleReadLine]::GetHistoryItems()[-1].CommandLine
    Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit", "-Command", $lastCmd
}

Set-Alias 'sudo!!' Invoke-SudoLast

These techniques work well for most commands, but be aware of:

• Multi-line commands may need special handling
• Commands with double quotes require escaping
• Some interactive commands won't work properly

If you prefer to elevate the entire session instead of spawning a new window:

if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {  
    Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit", "-Command", "cd '$pwd'"
    Exit
}

Remember that:

• Always verify the command you're elevating
• Consider adding a confirmation prompt to custom functions
• Audit your $PROFILE if used in shared environments

For Unix/Linux users, sudo !! is an essential time-saver that re-executes the previous command with elevated privileges. PowerShell users often miss this convenient shortcut when working in Windows environments.

PowerShell doesn't have a direct single-command equivalent, but we can achieve similar functionality through these approaches:

# Method 1: Using Invoke-Expression
function sudo-last {
    Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit","-Command","$(Get-History -Count 1).CommandLine"
}

For a more complete solution that handles edge cases:

function Invoke-Admin {
    param(
        [switch]$LastCommand
    )
    
    if ($LastCommand) {
        $cmd = (Get-History -Count 1).CommandLine
        if (-not $cmd) {
            Write-Warning "No command history found"
            return
        }
        Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit","-Command","$cmd"
    }
    else {
        Start-Process pwsh -Verb RunAs
    }
}

Set-Alias -Name sudo -Value Invoke-Admin

# Run the last command as admin
sudo -LastCommand

# Alternative short alias usage
sal !! 'sudo -LastCommand'
!!  # Now works like sudo !!

1. UAC prompts will still appear (as with sudo)
2. The new window behavior differs from Unix's in-place escalation
3. Complex commands with pipes or redirections may need special handling

For those preferring a single-line solution without functions:

Start-Process pwsh -Verb RunAs -ArgumentList "-NoExit","-Command","$(Get-History -Count 1).CommandLine"