Question

首先，在脚本编写方面，我是一个新手。到目前为止，我已经运行了脚本的前几行。我的日志文件输出为文本文件，但是我在创建switch语句时遇到麻烦，该语句继续通过按随机数来提示用户。任何帮助将不胜感激。

Clear-Host

$Dir = Get-ChildItem C:\Users\rtres\Downloads\ -Recurse
$List = $Dir | where {$_.Extension -eq ".log"} | Out-File 'C:\Users\rtres\Downloads\Log.txt'

Clear-Host

$Dir = Get-ChildItem C:\Users\rtres\Downloads\ -Recurse
$List = $Dir | where {$_.Extension -eq ".log"} | Out-File 'C:\Users\rtres\Downloads\Log.txt'

Answer 1

刚接触PowerShell时，建议您阅读有关Get-ChildItem cmdlet的内容，以了解它返回的对象类型。

阅读代码，让我觉得您期望以字符串形式显示文件名列表，但实际上它是FileInfo和/或DirectoryInfo对象的列表。

话虽如此，创建一个循环来提示用户输入某个值并不难。试试这个：

# create variables for the folder to search through and the complete path and filename for the output
$folder = 'C:\Users\rtres\Downloads'
$file   = Join-Path -Path $folder -ChildPath 'Log.txt'

# enter an endless loop
while ($true) {
    Clear-Host
    $answer = Read-Host "Press any number to continue. Type Q to quit."
    if ($answer -eq 'Q') { break }  # exit the loop when user wants to quit
    if ($answer -match '^\d+$') {   # a number has been entered
        # do your code here.

        # from the question, I have no idea what you are trying to write to the log..
        # perhaps just add the file names in there??

        # use the '-Filter' parameter instead of 'where {$_.Extension -eq ".log"}'
        # Filters are more efficient than other parameters, because the provider applies them when
        # the cmdlet gets the objects rather than having PowerShell filter the objects after they are retrieved.
        Get-ChildItem $folder -Recurse -File -Filter '*.log' | ForEach-Object {
            Add-Content -Path $file -Value $_.FullName
        }
    }
    else {
        Write-Warning "You did not enter a number.. Please try again."
    }
    # wait a little before clearing the console and repeat the prompt
    Start-Sleep -Seconds 4
}

希望有帮助

如何编写一个switch语句，通过按数字继续提示用户

1 个答案: