在另一篇名为使用正则表达式的多种方式的文章中,我详细介绍了 Select-String、-match 和$matches 变量。$null 或空测试$null 或空数组可能比较棘手。 下面是一些常见的数组陷阱。这个语句乍一看似乎可行。PowerShell 复制 if ( $array -eq $null) { 'Array is $null' } ...
Summary: Use the built in features of PowerShell to easily add new Element to a string array. I created an array of strings in PowerShell, but I need to add to it. Is there a simple way to do this? Absolutely. Just use+=to add an element to your string array. In the following ...
$servers | Select-String SQL 我仔細看看 Select-String,-match 另$matches 一篇文章中的 變數稱為 使用regex 的很多方式。$null或空白$null測試或空陣列可能很棘手。 以下是陣列的常見陷阱。一目了然,此語句看起來應該正常運作。PowerShell 複製 if ( $array -eq $null) { 'Array is $null' } 但...
# Create Input Data$enc= [system.Text.Encoding]::UTF8$string1="This is a string to hash"$data1=$enc.GetBytes($string1)# Create a New SHA1 Crypto Provider$sha= New-Object System.Security.Cryptography.SHA1CryptoServiceProvider$#Nowhashand display results$result1=$sha.ComputeHash($data1) S...
Turning a String Into an Array Believe it or not, there might very well be times when you find it useful to convert a string value to an array. For example, suppose you have a part number like this: $e = "9BY6742W" It’s very possible that each character in that part number has...
To create a strongly typed array, that is, an array that can contain only values of a particular type, cast the variable as an array type, such as string[], long[], or int32[]. To cast an array, precede the variable name with an array type enclosed in brackets. For example:Power...
Optimize the += operation for a collection when it's an object array (#23901) (Thanks @jborean93!) Allow redirecting to a variable as experimental feature PSRedirectToVariable (#20381) General Cmdlet Updates and Fixes Change type of LineNumber to ulong in Select-String (#24075) (Thanks ...
可以在-F的左边放置多个字符串通配符,类似.NET中的String.Format方法。-F右边相应的值或表达式也须要使用逗号分隔。 “{0} {3} at {2}MB fit into one CD at {1}MB” -f (720mb/1.44mb), 720, 1.44, “diskettes” 500 diskettes at 1.44MB fit into one CD at 720MB ...
Optionally, you can provide a brief help string that describes the default value of your parameter, by adding thePSDefaultValueattribute to the description of your parameter, and specifying theHelpproperty ofPSDefaultValue. To provide a help string that describes the default value (100) of theSize...
ForEach-Object[-InputObject <PSObject>] [-MemberName] <String> [-ArgumentList <Object[]>] [-WhatIf] [-Confirm] [<CommonParameters>] PowerShell ForEach-Object-Parallel [-InputObject <psobject>] [-ThrottleLimit <int>] [-TimeoutSeconds <int>] [-AsJob] [-UseNewRunspace] [-WhatIf] [-...