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.
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.

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 asGet-Command -Verb Get
) -
Get-Help [命令名]
: View the help document of a command, such asGet-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.

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 asdir
orls
) -
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:

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.
First write a
.ps1
file, such ascleanup.ps1
, with the following content:$path = "$env:TEMP\*" Remove-Item -Path $path -Recurse -Force
Open "Task Scheduler", create a new task, and set the trigger to execute every day.
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.
The above is the detailed content of how to use PowerShell. For more information, please follow other related articles on the PHP Chinese website!

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