$userWrite-Host"The location of the log file is$logFile" 备注 使用Write-Host 显示变量并将变量名放在双引号 (") 中时,将计算该变量并显示其值。 如果使用单引号 ('),则不会计算该变量,从而导致显示其名称。 若要从变量中删除所有值,可以将该变量设置为等于$null。$null变量由 Window...
PowerShell variables are actually mapped to underlying classes in the Microsoft® .NET Framework. And in the Framework, variables are objects, meaning they can store data and also manipulate it in many ways. In fact, the robust capabilities of variables in Windows PowerShell™ are the reason...
There are several different types of variables in PowerShell. User-created variables: User-created variables are created and maintained by the user. By default, the variables that you create at the PowerShell command line exist only while the PowerShell window is open. When the PowerShell window...
Conceptually, most of these variables are considered to be read-only. Even though theycanbe written to, for backward compatibility theyshould notbe written to. 以下是 PowerShell 中的自動變數清單: 完整描述 $$ Contains the last token in the last line received by the session. ...
Get-Variable Cmdlet Gets the variables in the current console. New-Variable Cmdlet Creates a new variable. Set-Variable Cmdlet Sets the value of a variable. Creates the variable if one with the requested name does not exist. Remove-Variable Cmdlet Deletes a variable and its value. ...
The variable name syntax of${<name>}shouldn't be confused with the$()subexpression operator. For more information, see Variable name section ofabout_Variables. In the following example, the value ofPropNameis returned. PowerShell $a= @{ PropName =100} ${a}?.PropName ...
Loops.Loops provide powerful means of evaluating and repeating complex tasks based on the state of parameters or variables. There are several different types of loops. Thewhilestatement repeats code as long as the following conditional expression is true. ...
When you use Write-Information in a script with InformationAction, Write-Information values are shown depending on the value of the InformationAction parameter. For more information about $InformationPreference, see about_Preference_Variables. YAML Copy Type: ActionPreference Aliases: infa Accepted ...
The dot sourcing feature lets you run a script in the current scope instead of in the script scope. When you run a script that is dot sourced, the commands in the script run as though you had typed them at the command prompt. The functions, variables, aliases, and drives that the scri...
The PowerShelldot-sourceoperator brings script files into the current session scope. It is a way to reuse script. All script functions and variables defined in the script file become part of the script it is dot sourced into. It is like copying and pasting text from the script file directly...