你如何编写一个从管道输入中读取的powershell函数?
发布时间:2020-12-13 20:12:53 所属栏目:百科 来源:网络整理
导读:解决了: 以下是使用管道输入的函数/脚本的最简单示例.每个行为与管道到“echo”cmdlet的行为相同. 作为功??能: Function Echo-Pipe { Begin { # Executes once before first item in pipeline is processed } Process { # Executes once for each pipeline
解决了:
以下是使用管道输入的函数/脚本的最简单示例.每个行为与管道到“echo”cmdlet的行为相同. 作为功??能: Function Echo-Pipe { Begin { # Executes once before first item in pipeline is processed } Process { # Executes once for each pipeline object echo $_ } End { # Executes once after last pipeline object is processed } } Function Echo-Pipe2 { foreach ($i in $input) { $i } } 作为脚本: #Echo-Pipe.ps1 Begin { # Executes once before first item in pipeline is processed } Process { # Executes once for each pipeline object echo $_ } End { # Executes once after last pipeline object is processed } #Echo-Pipe2.ps1 foreach ($i in $input) { $i } 例如. PS > . theFileThatContainsTheFunctions.ps1 # This includes the functions into your session PS > echo "hello world" | Echo-Pipe hello world PS > cat aFileWithThreeTestLines.txt | Echo-Pipe2 The first test line The second test line The third test line
您还可以选择使用高级功能,而不是上面的基本方法:
function set-something { param( [Parameter(ValueFromPipeline=$true)] $piped ) # do something with $piped } 很明显,只有一个参数可以直接绑定到管道输入.但是,您可以将多个参数绑定到管道输入上的不同属性: function set-something { param( [Parameter(ValueFromPipelineByPropertyName=$true)] $Prop1,[Parameter(ValueFromPipelineByPropertyName=$true)] $Prop2,) # do something with $prop1 and $prop2 } 希望这可以帮助您学习另一个shell. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |