Question

读取数据的操作和随后的文件清理必须在一个会话中进行。和其他进程不应访问该文件。

$FileTwo = [System.io.File]::Open('C:\FiLeTwo.txt', "Open", "Read", "None") 
$FileTwo2 = New-Object System.IO.StreamReader($FileTwo)
$text = $text + $FileTwo2.ReadToEnd()

$text = $text -replace '\ ' -replace 'g' -replace '\(' -replace '\)' -replace $re, "" #-replace '\n'
# Set-Content 'C:\FiLeTwo.txt' "" -Force 
# IN that moment I need to clear the file. 
# But I need cleare the file and,  after, close the File ($FileTwo.Close())

$FileTwo.Close()

Answer 1

您可以使用Clear-Content删除文件的内容，但不能删除它。

示例： Clear-Content c:\path\to\your\file.txt

您可以在此处了解更多信息： https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.management/clear-content?view=powershell-6

Answer 2

您甚至不需要使用那么多流：

$path = 'C:\FiLeTwo.txt'
$text = Get-Content $path -Raw
Clear-Content $path
$text = $text -Replace ...

如果要使用FileStream，也可以使用SetLength删除内容：

# open with "ReadWrite"
$fileTwo = [System.IO.File]::Open("C:\FiLeTwo.txt", "Open", "ReadWrite", "None") 
try {
    # ... read, replace etc ...
    # clear the contents:
    $fileTwo.SetLength(0);
}
finally {
    # make sure to put this in a finally block!
    $fileTwo.Dispose()
}

（请确保将它们的流正确放置在finally块中！）

阅读后如何清除文件内容

2 个答案: