PowerShell 支持一组特殊字符序列,这些序列用于表示不属于标准字符集的字符。 序列通常称为转义序列。 转义序列以反引号字符开头,称为严重重音符 (ASCII 96) ,并且区分大小写。 反引号字符也可以称为转义字符。 仅当包含在双引号 ()"字符串中时,才会解释转义序列。 PowerShell 可识别以下转义序列: 序列说明 `0N...
自动变量$_或$PSItem包含管道中的当前对象,以便在 块中使用process。 自动$input变量包含仅适用于函数和脚本块的枚举器。 有关详细信息,请参阅about_Automatic_Variables。 在开头或管道外部调用 函数将执行块一process次。 在管道中process,块对到达函数的每个输入对象执行一次。
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. ...
有关自动变量和子字符串的详细信息,请参阅about_Automatic_Variables和子字符串。 示例3:在单独的行上显示联接输出 此示例在单独的行上联接服务名称与每个服务(使用制表符进行缩进)。 PowerShell Get-Service-Namese* |Join-String-PropertyName-Separator"`r`n`t"-OutputPrefix"Services:`n`t"Services: seclogon...
For more information, seeabout_Splitandabout_Join. Type Operators Use the type operators (-is,-isnot,-as) to find or change the .NET type of an object. For more information, seeabout_Type_Operators. Unary Operators Use the unary++and--operators to increment or decrement values and-for ne...
Common verbs used in Windows PowerShell include: Add, Clear, Copy, Get, Join, Lock, Move, New, Remove, Rename, Select, Set, Split, and Unlock. You can tell what each is used for just from its name. In this article I'll create three cmdlets: one to set the data contents of the ...
Join-PathCombines a path and a child path into a single path. The provider supplies the path delimiters. Limit-EventLogSets the event log properties that limit the size of the event log and the age of its entries. Measure-CommandMeasures the time it takes to run script blocks and cmdlets...
To store the result of our cmdlet, we first need a variable. Variables all start with a $. We could just call it “$a” but that’s not very descriptive, so we’ll call it: $MyPath. Go ahead and type that part in your PowerShell window. ...
To store the result of our cmdlet, we first need a variable. Variables all start with a $. We could just call it “$a” but that’s not very descriptive, so we’ll call it: $MyPath. Go ahead and type that part in your PowerShell window. ...
Making one combined parameter block is now just one little string with a couple of variables: $paramBlock=“$combinedParameters, $newParameter” In order to use splatting to join the commands and the default values, we’ll need to keep creatinghashtablesto provide the input. The technique I...