使用PowerShell的比较对象问题

Question

寻找比较两个系统对象的最佳方法。 尝试了比较对象选项，似乎没有给出所需的输出。

> $abc
BGP summary information for VRF default
Router identifier 192.168.0.3, local AS number 7251
Neighbor Status Codes: m - Under maintenance
  Neighbor         V  AS           MsgRcvd   MsgSent  InQ OutQ  Up/Down State  PfxRcd PfxAcc
  10.12.103.119    4  7251               0         0    0    0    5d23h Connect
  10.46.252.121    4  7251               0         0    0    0    5d23h Connect
> $def
BGP summary information for VRF default
Router identifier 192.168.0.3, local AS number 7251
Neighbor Status Codes: m - Under maintenance
  Neighbor         V  AS           MsgRcvd   MsgSent  InQ OutQ  Up/Down State  PfxRcd PfxAcc
  10.12.103.119    4  7251               0         0    0    0    5d23h Active
  10.46.252.121    4  7251               0         0    0    0    5d23h Estab 
> $abc.GetType()
IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     True     String                                   System.Object
> $def.GetType()
IsPublic IsSerial Name                                     BaseType
-------- -------- ----                                     --------
True     True     String                                   System.Object
> Compare-Object -ReferenceObject $abc -DifferenceObject $def
InputObject
-----------
BGP summary information for VRF default...
BGP summary information for VRF default...

Answer 1

你处理的是字符串([System.String](，而不是[System.Objects] - 后者只是基本类型，即[System.String]派生自什么。

比较

2 个多行字符串的最佳方法是逐行比较它们，为此，您必须将它们拆分为一组行：

PS> Compare-Object ($abc -split 'r?n') ($def -split 'r?n') 
InputObject                                                                     SideIndicator
-----------                                                                     -------------
  10.12.103.119    4  7251               0         0    0    0    5d23h Active  =>           
  10.46.252.121    4  7251               0         0    0    0    5d23h Estab   =>           
  10.12.103.119    4  7251               0         0    0    0    5d23h Connect <=           
  10.46.252.121    4  7251               0         0    0    0    5d23h Connect <=           

=>线(表示差异的输出对象的.SideIndicator属性值(表示 RHS 专用线 ( $def (，而<=表示 LHS 专用线 ( $abc (