⚡ PowerShell Cheat Sheet — Advanced

Remote Management

Enter-PSSession -ComputerName Server01               # Start a remote session
Invoke-Command -ComputerName Server01 -ScriptBlock { Get-Process }   # Run a command remotely

Error Handling

try {
    Get-Item "nonexistent.txt"
} catch {
    Write-Output "Error: $_"
}

Regular Expressions

"Hello123" -match "\d+"        # Returns True if string contains digits
"abc123" -replace "\d+", ""    # Remove digits

Working with JSON and XML

$json = Get-Content file.json | ConvertFrom-Json
$json.PropertyName
$json | ConvertTo-Json | Set-Content new.json

[xml]$xml = Get-Content file.xml
$xml.DocumentElement.ElementName

Jobs and Background Tasks

Start-Job -ScriptBlock { Get-Process }    # Run in background
Get-Job                                   # Show jobs
Receive-Job -Id 1                         # Get job result
Remove-Job -Id 1                          # Remove job

Scheduled Tasks

Register-ScheduledTask -Action (New-ScheduledTaskAction -Execute "notepad.exe") `
-Trigger (New-ScheduledTaskTrigger -At 12pm -Daily) -TaskName "NotepadTask"

Security and Credentials

Get-Credential                         # Prompt for credentials
Invoke-Command -ComputerName Server01 -Credential (Get-Credential) -ScriptBlock { Get-Service }

Performance and Logging

Measure-Command { Get-Process }        # Measure execution time
Start-Transcript -Path log.txt         # Start logging session
Stop-Transcript                        # Stop logging