Get-Variable 备注 Windows PowerShell 包含多个 cmdlet,用于创建、操作和查看变量。 但很少会使用这些变量,因为可以直接创建和操作变量,而无需使用 cmdlet。 因此,本课程仅简要介绍了用于操作变量的 cmdlet。 下一单元: 在 Windows PowerShell 脚本中创建变量名称 ...
If the parameter is not included in a command, Windows PowerShell considers the value of the parameter to be false. Do not define Boolean parameters.If your parameter needs to differentiate between 3 values: $true, $false and "unspecified", then define a parameter of type Nullable<bool>....
{suffix}"}## Create $PSStyle if running on a version older than 7.2## - Add other ANSI color definitions as neededif($PSVersionTable.PSVersion.ToString()-lt'7.2.0') {# define escape char since "`e" may not be supported$esc= [char]0x1b$PSStyle= [pscustomobject]@{ Foreground = ...
First, define a$testvariable in the global scope. PowerShell $test="Global" Next, create aSample.ps1script that defines the$testvariable. In the script, use a scope modifier to refer to either the global or local versions of the$testvariable. ...
You aren't required to use any of these blocks in your functions. If you don't use a named block, then PowerShell puts the code in theendblock of the function. However, if you use any of these named blocks, or define adynamicparamblock, you must put all code in a named block. ...
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Here, the script will pass the contents of the local variable $log into the $one variable, and use it to define the log name retrieved. It will then pass the local variable $quantity into the $two variable, and use that to define the number of event log entries retrieved. The passing...
To create this script, open a text editor or a script editor, type these commands, and then save them in a file namedServiceLog.ps1. Parameters in scripts To define parameters in a script, use a Param statement. TheParamstatement must be the first statement in a script, except for comme...
script is, in effect, dot-sourced, so any variables, functions, and the like that you define in a profile script remain available in the PowerShell session, which is incredibly handy. I use profiles to create PowerShell drives, various useful variables, and a few useful (for me!) ...
Like pipeline-oriented functions, theForeach-Objectcmdlet lets you define commands to execute before the looping begins, during the looping, and after the looping completes: PS > "a","b","c" | Foreach-Object ` -Begin { "Starting"; $counter = 0 } ` -Process { "Processing $_"; $cou...