如何从PS输出中过滤出特定值

Question

I am running a PS command get-Keyproperty which is returning result in table format at below"

Key                  Label                          Policy     Running  Required
---                  -----                          ------     -------  --------
abc                 UI                               on         True     False  
efg                 UI                               off        True     False 

I want to retrieve value of Policy which is on

How to retrieve Policy value of abc Key ?

I am running get-Keyproperty | Select-Object abc get-Keyproperty | Select-Object abc but it is not working.

Answer 1

To get the value of Policy try to run

Get-Keyproperty | Select-Object -ExpandProperty Policy

Even though the command above is the recommended way, you can also get the same result with (Get-Keyproperty).Policy .

If you want to check if the value matches "on" just do (Get-Keyproperty | Select-Object -ExpandProperty Policy) -eq "on"

If you want the Policy Value of a certain entry you can either:

1. Choose the entry over its position in the table

   (Get-Keyproperty | Select-Object -ExpandProperty Policy)[0]

2. Or by finding it over its value of Key

   Get-Keyproperty | Where-Object {$_.Key -eq "abc" } | Select-Object -ExpandProperty Policy

   As mentioned in the comments, a shorter way of the same command is

   (Get-Keyproperty | ? Key -eq "abc").Policy

   ? is an alias ( Get-Alias ? ) and the {script block} is only neccessary for more complex expressions which then requires the $_.Key or $PSItem.Key (introduced in PSv3) notation; which both are synonym for the current object in the pipeline . See Get-Help Where-Object .