我想解析设备配置txt文件，并在匹配字符串后选择10行。该配置文件在配置中的不同位置配置了相同的接口，因此当我运行PowerShell脚本时，它发现两个发现了两个我不想要的重复接口。我只希望脚本仅返回唯一接口的输出。
$OSPF_Interfaces = Select-String -Path $File -Pattern "no\spassive-interface\s(Port-channel|TenGigabitEthernet|GigabitEthernet)" |
select -ExpandProperty line |
Select-Object -Unique
$Active_Interface = $OSPF_Interfaces -replace " no passive-interface ", "interface " |
Select-Object -Unique
$Active_Interface输出正确
interface GigabitEthernet1/1 interface GigabitEthernet1/2 interface GigabitEthernet1/3
所以现在我想解析配置文件以找到$Active_interface中每个接口的匹配项，并为每个接口选择2行匹配项：
foreach ($item in $Active_Interface) {
$Authenticated_Interface = Select-String -Path $File -Pattern "^$item" -Context 0,2 |
Select -Unique
$Authenticated_Interface
}
上面的代码可以正常工作，但返回的重复匹配如下：
interface GigabitEthernet1/1 description link to building 1 Medical interface GigabitEthernet1/1 description link to building 1 Medical interface GigabitEthernet1/2 description link to building 2 Garage interface GigabitEthernet1/2 description link to building 2 Garage interface GigabitEthernet1/3 description link to building 3 Gate interface GigabitEthernet1/3 description link to building 3 Gate
我不希望重复，但我不知道如何使它仅返回一个唯一的记录，如下所示：
interface GigabitEthernet1/1 description link to building 1 Medical interface GigabitEthernet1/2 description link to building 2 Garage interface GigabitEthernet1/3 description link to building 3 Gate