powershell..powershell中“string”由“char”组成。“char”是指单个字符。它是一个unicode字符(.net用utf16),占用2个字节空间。比如:'哈哈a1'.lengt
By using this method, we can acquire a substring from the original string and then compare it with a desired prefix to check if the string starts with that specific sequence. Basic Syntax: $substringToCompare = $strVal.Substring(0, $prefix.Length) Parameters: $strVal - This is the ...
# Getting registrar pool $strRegPool = $null try { $strRegPool = (Get-CsTenant).TenantPoolExtension } catch {} $Error.Clear() if (![System.String]::IsNullOrEmpty($strRegPool)) { $strRegPool = $strRegPool.Substring($strRegPool[0].IndexOf(':') + 1) } <# $strRegPoolEntry = ...
$value='S-ATX-SQL01'if($value-match'S-\w\w\w-SQL\d\d') {# do something} A regex pattern matches anywhere in the string by default. So you can specify a substring that you want matched like this: PowerShell $value='S-ATX-SQL01'if($value-match'SQL') {# do something} ...
if($string) {Write-Host"The variable is not null."}else{Write-Host"The variable is null."} Output: The variable is not null. Let’s assign an empty string value to a variable and check again. If a variable is not assigned, it also has a null value. ...
9. Check if Element Starts with Substring in Array We can use the-likeoperator to check if an array contains an element having a particular pattern. Here is an example: Use Like Operator 1 2 3 4 5 6 7 8 9 $array=@("PowerShell","Java","PHP") ...
Check if file created today and not 0 KB Check if HyperThreading is enabled Check if IIS running on a remote server check if object is $null Check if OS is 32bit or 64bit check If Process Is Running in another computer Check if SMB1 is enabled on the AD servers Check if string cont...
BypassUseRemote... CheckForPermissions Method System.Void CheckForPermiss... Close Method System.Void Close() ConfirmUsage Method bool ConfirmUsage() Delete Method System.Void Delete(), Syste... Dispose Method System.Void Dispose() ... ToString Method string ToString() UpdateValidationKey ...
似乎所有的条件语句都使用if...else...，它的作用可以简单地概括为非此即彼，满足条件A则执行A的语句，否则执行B语句，python的if...else...功能更加强大，在if和else之间添加数个elif,有更多的条件选择，其表达式如下:
You're likely getting a blank because there's not such function named "Substring" in PowerShell. What does exist is the Substring() method on a string object, but you're not referencing that, hence the blank result. Secondly, the property "Directory" is of type [System.IO.FileSystemInfo...