Shell Master — PowerShell · CMD

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EXTREME SHELL MASTERY

PowerShell pipelines, CMD forensics, BAT automation wizardry, remote execution, registry hacking, scheduled tasks, and the commands that make sysadmins look like wizards.

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SHELL QUICK REFERENCE

// PowerShell · CMD · BAT — Extreme Commands

Command	Shell	Level	Purpose
`Invoke-WebRequest`	PS	Rare	Full HTTP client — GET/POST/headers/sessions
`Get-WmiObject`	PS	Epic	Query hardware, OS, processes via WMI
`Invoke-Command`	PS	Legend	Run commands on remote machines via WinRM
`Start-Job / Receive-Job`	PS	Legend	Background jobs — parallel execution
`Where-Object / ForEach-Object`	PS	Rare	Pipeline filtering and transformation
`Select-Object / Sort-Object`	PS	Rare	Shape and sort pipeline objects
`Export-Csv / Import-Csv`	PS	Rare	Read/write structured CSV data
`ConvertTo-Json / ConvertFrom-Json`	PS	Rare	JSON serialization in pipeline
`Register-ScheduledTask`	PS	Epic	Create Windows scheduled tasks
`New-ItemProperty (Registry)`	PS	Legend	Read/write Windows registry
`Get-EventLog / Get-WinEvent`	PS	Epic	Query Windows event logs
`Start-Transcript`	PS	Rare	Record full session to log file
`Measure-Object`	PS	Rare	Sum, average, min, max of pipeline values
`Set-ExecutionPolicy`	PS	Rare	Control script execution security policy
`$ErrorActionPreference`	PS	Epic	Control error handling behavior globally
`Try/Catch/Finally`	PS	Rare	Structured exception handling
`for /f "tokens=..."`	CMD	Legend	Parse text/command output line by line
`wmic`	CMD	Epic	WMI from CMD — query system info
`netsh`	CMD	Legend	Full network config — firewall, WiFi, interfaces
`schtasks /create`	CMD	Epic	Schedule tasks from CMD
`reg add / reg query`	CMD	Legend	Registry operations from CMD
`tasklist /svc`	CMD	Rare	List processes with their services
`findstr /r /s`	CMD	Epic	Regex search across files recursively
`robocopy`	CMD	Legend	Robust file copy with retry, mirror, exclude
`cipher /e /d`	CMD	Master	EFS file encryption/decryption
`call :label / goto`	BAT	Rare	Subroutines and flow control in batch
`setlocal enabledelayedexpansion`	BAT	Legend	Dynamic variables inside loops
`for /l %%i in (1,1,10)`	BAT	Epic	Numeric counter loops in batch
`%~dp0 / %~nx0`	BAT	Legend	Script path magic variables
`errorlevel`	BAT	Epic	Exit code checking and branching
`xcopy /e /h /i`	ALL	Rare	Deep copy with hidden files and folders
`Foreach-Object -Parallel`	PS	Master	True parallel execution (PS 7+)
`diskpart`	CMD	Master	Disk partition management scripted
`winrm quickconfig`	CMD	Master	Enable remote PowerShell management
`icacls`	ALL	Legend	Advanced NTFS permission management
`bcdedit`	CMD	Master	Boot configuration data editor
`Get-Acl / Set-Acl`	PS	Legend	Read/write file and registry permissions
`Test-NetConnection`	PS	Rare	Advanced network connectivity & port tests
`netstat -ano`	ALL	Rare	All connections with owning process IDs
`sc config / sc create`	CMD	Legend	Create and configure Windows services
`Compress-Archive / Expand-Archive`	PS	Rare	Zip/unzip without external tools