Powershell Foreach where-object -eq value - powershell

Question

If I import a csv of computer names $computers that looks like this
Host
----
computer5
Computer20
Computer1
and import another csv of data $data that looks like this
Host OS HD Capacity Owner
---- -- -- ------ -----
Computer20 Windows7 C 80 Becky
Computer1 Windows10 C 80 Tom
Computer1 Windows10 D 100 Tom
computer5 Windows8 C 100 sara
computer5 Windows8 D 1000 sara
computer5 Windows8 E 1000 sara
Im trying to do this
foreach ($pc in $computers){
$hostname = $pc.host
foreach ($entry in $data | where {$enty.host -eq $hostname})
{write-host "$entry.Owner"}
}
The foreach statement isn't finding any matches. How can I fix this?
Im trying to do more than just write the owner name but, this is the basic premise
Thanks!
Steve

Answer 1

Replace $enty with $_ inside the Where-Object filter block:
foreach ($entry in $data |Where-Object {$_.host -eq $hostname}){
Write-Host $entry.Owner
}

Answer 2

Here's another way to do it, using an array $computers.host on the left side of the -eq operator:
$computers = 'Host
computer5
Computer20
Computer1' | convertfrom-csv
$data = 'Host,OS,HD,Capacity,Owner
Computer20,Windows7,C,80,Becky
Computer1,Windows10,C,80,Tom
Computer1,Windows10,D,100,Tom
computer5,Windows8,C,100,sara
computer5,Windows8,D,1000,sara
computer5,Windows8,E,1000,sara' | convertfrom-csv
$data | where { $computers.host -eq $_.host } | ft
Host OS HD Capacity Owner
---- -- -- -------- -----
Computer20 Windows7 C 80 Becky
Computer1 Windows10 C 80 Tom
Computer1 Windows10 D 100 Tom
computer5 Windows8 C 100 sara
computer5 Windows8 D 1000 sara
computer5 Windows8 E 1000 sara
Or
$data | where host -in $computers.host
Or
foreach ( $entry in $data | where host -in $computers.host | foreach owner ) {
$entry }
Becky
Tom
Tom
sara
sara
sara
Assuming $entry is spelled correctly, this syntax just happens not to work.
The expression $data | where {$entry.host -eq $hostname} just doesn't make sense by itself. Good question though. You can indeed use a pipeline in the parens after foreach.
foreach ($pc in $computers){
$hostname = $pc.host
foreach ($entry in $data | where {write-host "entry is $entry";
$entry.host -eq $hostname}){
write-host "$entry.Owner"
}
}
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