如何防止文字被刪除

Question

我遇到了一個小問題，我必須要求用戶不要在文件夾名稱中放置反斜槓「\」，因爲當我將$ Server和$組合在一起時，它將刪除服務器名稱家長...我如何防止這種情況發生？我寧願不限制我的用戶添加反斜槓...

另外，我一直試圖阻止c：，d：，e：等驅動器在$ Parent中使用，但即使我使用-in或-contains它仍然允許輸入c：\ xxxx或d：\ xxxx。我如何防止這種情況發生？

# File share server name 
$Server = Read-Host -prompt "Verify Server Server Name (ie ECCOFS01)" 
If ([string]::IsNullOrWhiteSpace($Server)) { 
    Write-Host "You entered $Server which is an incorrect value: This Script is now Exiting." -Foreground "White" -Background "Red" 
    Exit 
    } 
else { 
    Write-Host "You Entered $Server" -Foreground "Black" -Background "Yellow" 
    } 

    # Parent folder setup 
$Parent = Read-Host -prompt "Enter full parent path that will contain the new folder(ie. Groups\ECCO IT) - Do NOT start with \. Please use correct spelling and capitalization (ie. Parent Folder Name). " 
If ([string]::IsNullOrWhiteSpace($Parent) -or ($Parent -eq "c:") -or ($Parent -eq "d:")) { 
    Write-Host "You entered $Parent which is an incorrect value: This Script is now Exiting." -Foreground "White" -Background "Red" 
    Exit 
    } 
else { 
    Write-Host "You Entered $Parent" -Foreground "Black" -Background "Yellow" 
    } 

$ServerParentShare = "\\"+[IO.Path]::Combine($Server,$Parent) 

    # New Folder Name 
$Name = Read-Host -prompt "Enter New Folder Name. Please use correct spelling and capitalization (ie. New Test Folder)" 
If ([string]::IsNullOrWhiteSpace($Name)) { 
    Write-Host "You entered $Name which is an incorrect value: This Script is now Exiting." -Foreground "White" -Background "Red" 
    Exit 
    } 
else { 
    Write-Host "You Entered $Name." -Foreground "Black" -Background "Yellow" 
    } 

$Path = [IO.Path]::Combine($ServerParentShare,$Name) 
    Write-Host = "New Folder Path = $Path" -Foreground "Black" -Background "Yellow" 

    # Choose parent OU 
$Country = Read-Host -prompt "Enter the Country OU that the Security Group will reside in (i.e. Global, Americas, Europe, Asia Pacific)" 
If ([string]::IsNullOrWhiteSpace($Country)) { 
    Write-Host "You entered $Country which is an incorrect value: This Script is now Exiting." -Foreground "White" -Background "Red" 
    Exit 
    } 
else { 
    Write-Host "---------------------VERIFY ENTRY---------------------" -Foreground "Black" -Background "Yellow" 
    Write-Host "OU = $Country, New share location = $Path" -Foreground "Black" -Background "Yellow" 
    } 


    # Option to continue or cancel the script 
$Continue = Read-Host -prompt "Does this look correct? Y or N?" 
If (($Continue -eq "N") -or ($Continue -eq "No")) { 
    Write-Host "Please Start over. This Script is now Exiting." -Foreground "White" -Background "Red" 
    Exit 
    } 
else { 
    Write-Host "Make sure to verify all folders and and AD Groups once complete." -Foreground "Yellow" -Background "Black" 
    } 

Answer 1

我必須要求用戶不要把一個反斜槓 「\」 文件夾名稱

插入此行一行12後：

$parent = $parent -replace '^\\','' 

如果$父在位置0包含一個反斜槓，它將用空字符串替換它。如果沒有，它沒有效果。

PS C:\> '\a\b' -replace '^\\','' 
a\b 
PS C:\> 'a\b' -replace '^\\','' 
a\b 
PS C:\> 

技術上這並不阻止用戶把一個反斜槓的文件夾名稱，但如果他/她呢，它會刪除它，這有類似的效果。

我一直在試圖阻止C：d：，E：等從 $家長正在使用的驅動器，但即使我使用-in或 - 包含它仍然允許

-in和-contains對集合進行操作，而不是單個對象（如$ parent）。對於$ parent，你可能想使用-like或者-match。您可以檢查這樣的驅動器盤符格式的路徑：

($parent -like '?:*') 

或者你可以找一個冒號路徑

($parent -like '*:*') 

您可以使用這些條件語句中while循環，迫使用戶繼續輸入，直到他/她輸入你想要的格式。或者如果輸入無效則可以退出。把它放在一起，例如：

do{ 
    $parent = read-host -prompt 'Enter full parent path' 
    $parent = $parent -replace '^\\','' 
}while($parent -like '*:*')