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# 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. With PowerShell consists of a command-line interface shell and related scripting language built on the .NET Framework and later .NET, originally only a Windows component, then open-sourced on August 18, 2016, with cross-platform support provided. PowerShell is object-oriented, meaning it does not process simple text, but .NET objects. * * * ## Who Should Learn PowerShell? PowerShell is suitable for technical personnel 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, developers, and security engineers. The core advantage of PowerShell is converting graphical interface click operations into reusable script commands, particularly suitable for batch operations and scheduled tasks. Ordinary users who only need basic computer operations do not need to learn PowerShell. * * * ## Why Do We Need PowerShell? In the UNIX world, command-line shells such as bash, zsh, and sh have long become standard for developers and operations personnel. However, Windows initially only had the limited-functionality cmd.exe, lacking scripting capabilities, modular support, and object processing capabilities. PowerShell was born to fill the gaps in Windows system automation and command-line control, and now it has broken away from Windows to become a truly cross-platform automation tool. ### PowerShell Core Features 1. **Object-Oriented** - Command outputs are objects (such as processes, files), not plain text. 2. **Pipeline** - Supports object passing, enabling chained data processing. 3. **Unified Naming Convention** - Uses `Verb-Noun` format (such as `Get-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** - Functions are expanded in module form (such as `ActiveDirectory` module). 7. **Automation Scripts** - Supports complex script writing (variables, loops, functions, etc.). 8. **Remote Management** - Manage remote machines through `Enter-PSSession` or `Invoke-Command`. 9. **Alias System** - Supports abbreviations (such as `ls` replacing `Get-ChildItem`). 10. **Powerful Help System** - Built-in `Get-Help` and 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 of 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/](https://docs.microsoft.com/powershell/)