PowerShell Tutorial

PowerShell (including Windows PowerShell and PowerShell Core) is a cross-platform command-line tool and scripting language developed by Microsoft, built on top of the .NET framework. Compared with

PowerShell consists of a command-line interface shell and related scripting language built on .NET Framework and later .NET. It was initially only a Windows component, and was later open-sourced on August 18, 2016 with cross-platform support.

PowerShell is object-oriented, meaning it processes not simple text but .NET objects.

Who should learn PowerShell?

PowerShell is suitable for technical professionals who need to efficiently manage Windows systems, automate repetitive tasks, or interact with Microsoft products (such as Active Directory, Azure, Exchange, etc.), including system administrators, IT operations staff, developers, and security engineers.

PowerShell's core advantage is converting graphical interface click operations into reusable script commands, making it especially suitable for batch operations and scheduled tasks.

Ordinary users who only need basic computer operations do not need to learn PowerShell.

Why do you need PowerShell?

In the UNIX world, command-line shells such as bash, zsh, and sh have long been standard tools for developers and operations personnel. However, Windows initially only had cmd.exe with limited functionality, lacking scripting capabilities, modular support, and object processing abilities.

PowerShell was born precisely to fill the gaps in Windows systems regarding automation and command-line control. Now, it has moved beyond Windows and become a truly cross-platform automation tool.

PowerShell Core Features

  1. Object-Oriented- Commands output objects (such as processes, files) rather than plain text.
  2. Pipeline- Supports object passing for chained data processing.
  3. Unified Naming Convention- Usesverb-nounformat (such asGet-Process）。
  4. Cross-Platform Support- Can run on Windows, Linux, and macOS (PowerShell Core).
  5. Deep .NET Integration- Can directly call .NET class libraries and methods.
  6. Modular Design- Features are extended in the form of modules (such asActiveDirectorymodule).
  7. Automation Scripts- Supports complex script writing (variables, loops, functions, etc.).
  8. Remote Management- ThroughEnter-PSSession right sidebar Invoke-CommandManage remote machines.
  9. Alias System- Supports shorthand (such aslsinstead ofGet-ChildItem）。
  10. Powerful Help System- Built-inGet-Helpand example code.

One-sentence summary: PowerShell is an object-oriented automation tool designed for efficient system management and cross-platform tasks.

PowerShell Getting Started Examples

Examples

# Get all running processes
Get-Process

# Get detailed information about a specific process
Get-Process -Name "notepad" | Select-Object Name, CPU, WorkingSet

# Stop a specific process
Stop-Process -Name "notepad" -Force

Related Resources

Official documentation:https://docs.microsoft.com/powershell/

Other extensions