问使用powershell查找文本文件值中的值是否存在

EN

$serverName = 'SERVER999AUTO1'
$valueISeek = ([regex]'(?i)server(\d+).*').Match($serverName).Groups[1].Value

if ((Get-Content "C:\list.txt") -contains $valueISeek) {
    Write-Host "Value '$valueISeek' found!" -ForegroundColor Green
} else {
    Write-Host "Value '$valueISeek' could not be found!" -ForegroundColor Red
}

(?i)         Match the remainder of the regex with the options: case insensitive (i)
server       Match the characters “server” literally
(            Match the regular expression below and capture its match into backreference number 1
   \d        Match a single digit 0..9
      +      Between one and unlimited times, as many times as possible, giving back as needed (greedy)
)           
.            Match any single character that is not a line break character
   *         Between zero and unlimited times, as many times as possible, giving back as needed (greedy)

$file = Get-Content "C:\list.txt"
$containsWord = $file | %{"SERVER999AUTO1" -match $_}
if ($containsWord -contains $true) {
    Write-Host "There is!"
} else {
    Write-Host "There ins't!"
}

$toMatch = "SERVER999AUTO1"
switch -File ("C:\list.txt")
{
    {$toMatch -match $_} { "There is!"; Break }
    default {"There isn't" }
}