可以使用Where-Object;

gci | Where-Object { !( $_ | Select-String "something" -quiet) }

我不确定是否可以在没有foreach-object的情况下完成，但它可以工作：

gci |foreach-object{if (-not (select-string -inputobject $_ -Pattern "something")){$_}}

如How do I output lines that do not match 'this_string' using Get-Content and Select-String in PowerShell?中所述
Select-String具有NotMatch参数。
你可以使用它：

gci | Select-String -notmatch "something"

foreach($line in Get-Content .\file.txt) 
{
    if(findstr $line "dummyText.txt" ){
        # Work here or skip here
    }
    else {
     
      echo $line 
    
}

试试这样的方法：

Get-ChildItem | Where-Object {-Not($_.Name.Contains("Case-Sensitive-String"))}

换句话说：

gci | ? {!($_.Name.Contains("Case-Sensitive-String"))}