在 PowerShell 中读取文件：Get-Content 详解

Source: Dev.to

Overview

Get-Content 读取文件的内容并将其写入管道。
它在对文件进行任何修改之前预览文件时非常有用，尤其是对于大文件或日志文件。

Basic Usage

# Read the entire file
Get-Content notes.txt

Previewing Files

# Show the first 10 lines (safe for big files)
Get-Content notes.txt | Select-Object -First 10

# Show the last 5 lines (useful for log files)
Get-Content logfile.txt | Select-Object -Last 5

Reading Specific Lines

# Show lines 0 through 10 (inclusive)
Get-Content notes.txt | Select-Object -Index 0..10

# Preview the first 5 lines of a file you are about to process
Get-Content myfile.txt | Select-Object -First 5

Reading Logs for Diagnostics

# Show the most recent 20 lines of an error log
Get-Content error.log | Select-Object -Last 20

Common Parameters

Practice

使用交互式 PowerShell 环境尝试上述命令。重复练习有助于将这些模式转化为肌肉记忆。

Related Topics (PowerShell for Beginners series)

• Getting Started – Your first commands
• Command Discovery – Find what exists
• Getting Help – Understand commands
• Working with Files – Copy, move, delete
• Filtering Data – Where-Object and Select-Object
• Pipelines – Chain commands together

Further Resources

• Official PowerShell Documentation
• Microsoft Learn – PowerShell Tutorials