使用逻辑运算符 (-and、-or、、-xor-not!、) 将条件语句连接到单个复杂条件中。 例如,可以使用逻辑-and运算符创建具有两个不同条件的对象筛选器。 有关详细信息,请参阅about_Logical_Operators。 重定向运算符 使用重定向运算符 (>、>>、2>、2>>和2>&1) 将命令或表达式的输出发送到文本文件。 重定向运算...
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($a-gt$b)-and(($a-lt20)-or($b-lt20)) PowerShell 支持以下逻辑运算符。 逻辑AND (-and) - 如果两个语句均为 TRUE,则为 TRUE。 PowerShell (1-eq1)-and(1-eq2)# Result is False 逻辑或 (-or) - 如果任一语句为 TRUE,则为 TRUE。
CopyTo(String destFileName) CopyTo(String destFileName, Boolean overwrite) 第一个方法签名采用目标文件名 (和路径) 。 以下示例使用第一种方法CopyTo将Final.txt文件复制到 目录C:\Bin。 PowerShell (Get-ChildItemc:\final.txt).CopyTo("c:\bin\final.txt") ...
When you use multiple values for this parameter, the OR Boolean operator is applied. For more information about how Conditional parameters work, see the Detailed Description section of this topic. You use this parameter in combination with the IncludedRecipients parameter as part of a precanned fil...
When you use multiple values for this parameter, the OR Boolean operator is applied. For more information about how Conditional parameters work, see the Detailed Description section of this topic. You use this parameter in combination with the IncludedRecipients parameter as part of a precanned fil...
We often encounter support cases where our customers leave the query execution timeout value at its default. In certain situations, we may find that when...
Use the-matchoperator to compare a string to the regular expression. '123-456-7890' -match '\d\d\d-\d\d\d-\d\d\d\d' PowerShell'sBooleanoperation will return truebecause it found a match for the regular expression. You can place a phone number inside a longer string to see ...
Every token can be interpreted as some kind of object type, such asBooleanorString. PowerShell attempts to determine the object type from the expression. The object type depends on the type of parameter a command expects and on whether PowerShell knows how to convert the argument to the corre...
null coalescing operator removes the need forifandelsestatements if you want to get the value of a statement if it’s not $null or return something else if it is $null. Note that this doesn’t replace the check for a boolean value of true or false, it’s only checking if the ...