如何获取powershell中涉及的robocopy摘要信息？

Question

我编写了一个快速脚本来比较跨服务器的文件差异，然后提示是否镜像更改。如果没有任何更改，我希望它智能地不提示复制。

剧本：

robocopy "$cSource" "$cDestination" /E /L /FP

$cDecision = Read-host "Continue = 1, anything else = Stop"

if ($cDecision -eq "1") {
robocopy "$cSource" "$cDestination" /MIR /FFT /Z /W:5 /MT:64 /XX /log:$cLogLocation

Invoke-item $cLogLocation

}

else { Write-host "Quit!" }

如果 Robocopy 报告“不匹配”、“失败”、“额外”和“复制”为 0，我希望 Powershell 不会要求继续。对于这个特定的项目来说，这不是很重要，但我可以想到这种检查的几个有用的用途。谢谢！

Answer 1

终于有人在10秒内没有回答！我使用您的问题继续了解有关 Powershell 的更多信息。以下对我有用，我希望看到其他人如何精简此代码：

Clear-Host
$ErrorActionPreference = "Continue"
$DebugPreference = "Continue"
$VerbosePreference = "Continue"

@"

## robocopy_helper.ps1 ########################################################
Usage:        powershell -ExecutionPolicy Bypass -File ./robocopy_helper.ps1

Purpose:      Dry run before Full run of robocopy

History:      07/11/2014  -  Created
###############################################################################

"@

## User Supplied Variables
$cSrc = "C:\Temp"
$cDst = "C:\Temp2"
$cLog = "c:\robo.log"

## Robocopy Dry Run
$robo_test = robocopy "$cSrc" "$cDst" /E /L /FP

## Use Regular Expression to grab the following Table
#               Total    Copied   Skipped  Mismatch    FAILED    Extras
#    Dirs :         1         0         1         0         0         0
#   Files :         1         0         1         0         0         0
$robo_results = $robo_test -match '^(?= *?\b(Total|Dirs|Files)\b)((?!    Files).)*$'

## Convert Table above into an array
$robo_arr = @()
foreach ($line in $robo_results){
    $robo_arr += $line
}

## Create Powershell object to tally Robocopy results
$row = "" |select COPIED, MISMATCH, FAILED, EXTRAS
$row.COPIED = [int](($robo_arr[1] -split "\s+")[4]) + [int](($robo_arr[2] -split "\s+")[4])
$row.MISMATCH = [int](($robo_arr[1] -split "\s+")[6]) + [int](($robo_arr[2] -split "\s+")[6])
$row.FAILED = [int](($robo_arr[1] -split "\s+")[7]) + [int](($robo_arr[2] -split "\s+")[7])
$row.EXTRAS = [int](($robo_arr[1] -split "\s+")[8]) + [int](($robo_arr[2] -split "\s+")[8])

## If there are differences, lets kick off robocopy again
if ( ($row.COPIED + $row.MISMATCH + $row.FAILED + $row.EXTRAS) -gt 0 ){
    robocopy "$cSrc" "$cDst" /MIR /FFT /Z /W:5 /MT:64 /XX /log:$cLog
    Invoke-item $cLog
}
else { Write-host "Folders '$cSrc' and '$cDst' are twins" }

注意：我已将上面的正则表达式从句号更改为星号前的空格。这消除了在文件名/路径中捕获“文件”或“目录”或“总计”的风险。原始行在下面供后代使用。
jski 2014/07/16

$robo_results = $robo_test -match '^(?=. ?\b(Total|Dirs|Files)\b)((?! Files).) $'