我正在尝试编写一个自动删除FTP服务器上的空目录的PowerShell脚本。我没有任何直接访问目录所在的服务器 - 我只能通过FTP访问它们。出于这个原因,我编写了一个PowerShell脚本,它使用WinSCP .NET程序集(尝试)删除空目录。但是,我有一个问题,因为服务器上的许多目录在目录名中都有方括号。
例如,可能会调用目录名称:[a]153432
这些目录很多,因此我希望编写一个脚本来删除它们。发生这种情况是因为它们是由程序创建的,该程序使用数字来创建所需的目录。为了处理这个程序,我创建了一个空目录
/latest/[b]test
我的程序是这样的:
# program to test deletion of directories with square-brackets in the name.
$HOSTNAME="myftpservername"
$USERNAME="myftpusername"
$PASSWORD="myftppassword"
$DLL_LOCATION="C:\Program Files (x86)\WinSCP\WinSCPnet.dll"
$LOCAL_DIRECTORY="C:\testdir\extended\baseroot"
# Load WinSCP .NET assembly
[Reflection.Assembly]::LoadFrom($DLL_LOCATION) | Out-Null
# Session.FileTransferred event handler
try
{
$sessionOptions = New-Object WinSCP.SessionOptions
$sessionOptions.Protocol = [WinSCP.Protocol]::ftp
$sessionOptions.HostName = $HOSTNAME
$sessionOptions.UserName = $USERNAME
$sessionOptions.Password = $PASSWORD
$session = New-Object WinSCP.Session
try
{
# Connect
$session.Open($sessionOptions)
$remoteFileWithUnixPath = "/latest/[b]test"
$removalResult = $session.RemoveFiles($remoteFileWithUnixPath)
if ($removalResult.IsSuccess)
{
Write-Host ("Removal of remote file {0} succeeded" -f $remoteFileWithUnixPath)
}
else
{
Write-Host ("Removal of remote file {0} failed" -f $remoteFileWithUnixPath)
}
}
finally
{
# Disconnect, clean up
$session.Dispose()
}
exit 0
}
catch [Exception]
{
Write-Host $_.Exception.Message
exit 1
}
当我运行它时,它会显示以下消息:
PS C:\Users\dbuddrige\Documents\dps> .\delete-squarebracket-dir.ps1
Removal of remote file /latest/[b]test succeeded
但是,目录不会被删除。
我还尝试使用分隔符指定目录名称,例如:
$remoteFileWithUnixPath = "/latest/\[b\]test"
但这也失败了(但至少它是这样说的):
PS C:\Users\dbuddrige\Documents\dps> .\delete-squarebracket-dir.ps1
Removal of remote file /latest/\[b\]test failed
但是,如果我将目录名[和变量$remoteFileWithUnixPath
]更改为
/latest/foo
然后重新运行程序,删除目录/latest/foo
就好了。
有没有人有任何想法我需要做些什么才能让它发挥作用?
Martin Prikryl指出了这个问题的答案[谢谢!]
完整工作的代码如下:
# program to test deletion of directories with square-brackets in the name.
$HOSTNAME="myftpservername"
$USERNAME="myftpusername"
$PASSWORD="myftppassword"
$DLL_LOCATION="C:\Program Files (x86)\WinSCP\WinSCPnet.dll"
$LOCAL_DIRECTORY="C:\testdir\extended\baseroot"
# Load WinSCP .NET assembly
[Reflection.Assembly]::LoadFrom($DLL_LOCATION) | Out-Null
# Session.FileTransferred event handler
try
{
$sessionOptions = New-Object WinSCP.SessionOptions
$sessionOptions.Protocol = [WinSCP.Protocol]::ftp
$sessionOptions.HostName = $HOSTNAME
$sessionOptions.UserName = $USERNAME
$sessionOptions.Password = $PASSWORD
$session = New-Object WinSCP.Session
try
{
# Connect
$session.Open($sessionOptions)
$remoteFileWithUnixPath = "/latest/[b]test"
$removalResult =
$session.RemoveFiles($session.EscapeFileMask($remoteFileWithUnixPath))
if ($removalResult.IsSuccess)
{
Write-Host ("Removal of remote file {0} succeeded" -f $remoteFileWithUnixPath)
}
else
{
Write-Host ("Removal of remote file {0} failed" -f $remoteFileWithUnixPath)
}
}
finally
{
# Disconnect, clean up
$session.Dispose()
}
exit 0
}
catch [Exception]
{
Write-Host $_.Exception.Message
exit 1
}
答案 0 :(得分:1)
WinSCP .NET程序集的某些方法(包括Session.RemoveFiles
)接受文件掩码,而不是简单路径。
方括号在file mask中具有特殊含义。
在将它们传递给汇编方法之前,您应该始终在文件路径上使用RemotePath.EscapeFileMask
method。
答案 1 :(得分:0)
我在命令行中使用转义序列:
Remove-Item 'C:\Scripts\Test`[1`].txt'
或使用-LiteralPath
参数。
Remove-Item -LiteralPath C:\scripts\test[1].txt
-LiteralPath参数不会尝试转换字符串。