如何使用PowerShell比较2个文本文件

Question

我希望能够比较2个文本文件的内容，看看这些文件的内容是否相同。如果2个文件的内容不同，我需要这个powershell脚本向我发送一封电子邮件，其中包含2个文件的差异列表。这是我的代码：

$fromaddress = "noreply@xy.com"
$toaddress = "me@xy.com "
$Subject = "Comparing 2 text files"
$login = "abc"
$password = "12345" | Convertto-SecureString -AsPlainText -Force
$smtpserver = "smtp.office.com" 
$message = new-object System.Net.Mail.MailMessage
$message.From = $fromaddress
$message.To.Add($toaddress)
$message.IsBodyHtml = $True
$message.Subject = $Subject
$attach = new-object Net.Mail.Attachment($attachment)
$message.Attachments.Add($attach)
$message.body = $body
$message.Priority = [System.Net.Mail.MailPriority]::High
$smtp = new-object Net.Mail.SmtpClient($smtpserver, 587)
$smtp.EnableSsl = $true
$smtp.Credentials = New-Object System.Net.NetworkCredential($login, $password);


IF (Compare-Object -ReferenceObject (Get-Content $dir\file1.txt) -DifferenceObject (Get-Content $dir\file2.txt)){
        Write-Output "The files are different "
        $smtp.Send($message);
    } 
    Else {
        Write-Output "The files are not different" 
    }

我查看了建议使用Compare-Object cmdlet的不同在线资源，但它似乎并不适用于我的情况。我的代码的问题是，它从file1返回所有内容。谁知道为什么这对我不起作用？

Answer 1

要比较两个文件并确定它们是否相同，请使用文件哈希：

$hash1 = Get-FileHash $dir\file1.txt
$hash2 = Get-FileHash $dir\file2.txt
if($hash1 -eq $hash2){
    'They are the same'
}else{
    'They are NOT the same
}

Answer 2

这会扫描2个文本文件中的差异并将其传递给第三个文件

$ awk ' {
    n=split($0,a,FS,seps)  # split record to a, preserve separators to seps, keep n
    sub(/D/,"& ",a[5])     # replace first D with D space (not an add :)
    for(i=1;i<=n;i++)      # iterate all a
        b=b a[i] seps[i]   # gather to buffer b
    print b; b=""          # output and clear b
}' file
ATOM  12107  N   CYS  D 1742     -42.369  73.203 -44.599  1.00224.20      C    N 

输出：

Answer 3

你的初始脚本几乎是正确的。你只需要添加-IncludeEqual

见下文。文本文件1＆amp; 2只是“喜欢那里”。文本文件3是“hi there2”

{str.replace(/ /g, '\u00a0').replace(/(?:\r\n|\r|\n)/g, '\u000a')}

编辑以展示如何使用IncludeEqual