linux - PowerShell 脚本查找文件中的特定单词并在行开头添加 “4”

Question

I am the best.  Page
I am good.       Page
I am funny.       Page

Output:

4 I am the best.  Page
4 I am good.       Page
4 I am funny.       Page

PowerShell script needs to look for “page” and add “4” at the beginning of the line. I have created this script:

powershell -Command “sed ‘s/^Page/4 &/‘c:\users*.txt >test.txt”

但它在 PowerShell 中不起作用。

Answer 1

这应该可以做到:

$content = Get-Content "C:\path\to\my\file.txt" 
$newcontent = $null

Foreach($line in $content)
{
    if($line -ne "")
    {
        $line = "4 "+"$line`r`n"
        $newcontent += $line
    }
    else
    {
        $newcontent += "`r`n"
    }
} 

Set-Content -Path "C:\path\to\my\file.txt" -Value $newcontent