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Table of Contents
Basic command: Start with "View"
File and directory operations: a faster way than a mouse
Automation tips: timed task scripts
Tips: Don't forget Tab completion and history

how to use PowerShell

Jul 14, 2025 am 01:18 AM
automation

PowerShell is a powerful command line tool in Windows that not only replaces CMD, but also automates system management tasks. Beginners should start by viewing class commands, such as Get-Host, Get-Command, and Get-Help; mastering file operation commands such as Get-ChildItem, Copy-Item, Move-Item and Remove-Item can improve efficiency; writing scripts to cooperate with the task planner to achieve repetitive tasks such as timed automatic cleaning; using Tab completion, arrow key call history and Select-Object filtering output can further improve operational convenience.

how to use PowerShell

PowerShell is a very powerful command line tool in Windows systems. It can not only replace traditional CMD, but also complete more complex system management tasks. If you just use it occasionally to check an IP or delete a file, it is similar to CMD; but if you are willing to spend more time to understand, you will find that it can actually save you a lot of time for repeated operations.

how to use PowerShell

Basic command: Start with "View"

When you first started to get involved in PowerShell, it is recommended to start with some basic viewing commands, such as:

  • Get-Host : View the current version information of PowerShell
  • Get-Command : List all available commands (can add parameter filtering, such as Get-Command -Verb Get )
  • Get-Help [命令名] : View the help document of a command, such as Get-Help Get-Process

These commands will not make any modifications to the system and are suitable for beginners to become familiar with the environment. You can try entering Get-Process to see which programs are currently running.

how to use PowerShell

File and directory operations: a faster way than a mouse

PowerShell is very convenient for processing files and directories, especially suitable for batch operations. Several commonly used commands:

  • Get-ChildItem : View files and subdirectories in the current directory (abbreviated as dir or ls )
  • Copy-Item : Copy a file or directory
  • Move-Item : Move files or directories
  • Remove-Item : Delete the file (plus -Recurse to delete non-empty directories)

For example, if you want to move all .log files under D:\Temp to D:\Logs, you can execute them directly:

how to use PowerShell
 Move-Item -Path "D:\Temp\*.log" -Destination "D:\Logs"

Isn't it much faster than manually dragging one by one?


Automation tips: timed task scripts

If you have some repetitive maintenance tasks, such as cleaning temporary files and backing up logs every day, you can write a small script with PowerShell and then run it automatically with the task scheduler.

  1. First write a .ps1 file, such as cleanup.ps1 , with the following content:

     $path = "$env:TEMP\*"
    Remove-Item -Path $path -Recurse -Force
  2. Open "Task Scheduler", create a new task, and set the trigger to execute every day.

  3. Select "Start Program" in the action, fill in the program/script in PowerShell, and write the parameters:

     -ExecutionPolicy Bypass -File "C:\Scripts\cleanup.ps1"

This will automatically clean temporary files every day. Note -ExecutionPolicy Bypass is to avoid permission policies restricting scripts from running.


Tips: Don't forget Tab completion and history

When using PowerShell, the Tab key can automatically complete commands, paths and even parameters, saving a lot of input time. Press the up and down direction keys to view the commands you have entered before, and you don’t need to re-tick them every time.

In addition, some commands output too much information by default. You can use | Select-Object [字段] to filter the content you care about. For example, just look at the process name:

 Get-Process | Select-Object Name

Basically that's it. After mastering these, you will find that PowerShell can not only complete small daily tasks, but also help you automate a lot of repetitive tasks. I may be a little uncomfortable at first, but it will become easier to use it slowly.

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