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All Forums >> [Scripting] >> Windows PowerShell >> Using the "like" operator
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Using the "like" operator - 11/23/2007 4:46:54 AM

gabrie

Posts: 2
Score: 0
Joined: 11/23/2007
Status: offline

Hi
I'm playing with the new VMware commandlet. When I run the following command I get this result:

Get-VM | Get-HardDisk

result:

Filename        : [LocalStore01] w-vcenter/w-vcenter.vmdk
ID              : VirtualMachine-vm-374/2000
Name            : Hard Disk 1

Filename        : [LocalStore02] TMP-WinXP-SP2-UK/TMP-WinXP-SP2-UK.vmdk
ID              : VirtualMachine-vm-427/2000
Name            : Hard Disk 1

Now I only want the harddisks from [LocalStore02], so I tried this:

Get-VM | Get-HardDisk | where { $_.Filename -like "[LocalStore02]" }

but this doesn't return any results.

Also tried with * or % but I cant get a script that works.

Who can help out?

Gabrie

Post #: 1

RE: Using the "like" operator - 11/25/2007 10:38:38 PM

SAPIENScripter

Posts: 261
Score: 2
Joined: 11/1/2006
From: SAPIEN Technologies
Status: offline

Why not simply drop the brackets? That's what is messing things up.

Get-VM | Get-HardDisk | where { $_.Filename -like "*LocalStore02*" }

Otherwise you'll need to escape the characters

Get-VM | Get-HardDisk | where { $_.Filename -like "*\[LocalStore02\]*" }

I think that should do the trick.

_____________________________

Jeffery Hicks
Windows PowerShell MVP
SAPIEN Technologies - Scripting, Simplified. www.SAPIEN.com

(in reply to gabrie)

Post #: 2

RE: Using the "like" operator - 11/25/2007 10:58:35 PM

gabrie

Posts: 2
Score: 0
Joined: 11/23/2007
Status: offline

Hi

Thx, I solved it through another forum... seems that instead of -like I should've used -match

Gabrie

(in reply to SAPIENScripter)

Post #: 3

RE: Using the "like" operator - 11/26/2007 12:02:59 AM

SAPIENScripter

Posts: 261
Score: 2
Joined: 11/1/2006
From: SAPIEN Technologies
Status: offline

Using -match will give you more hits without needing wildcards, which for you may be all that you need. You can still use wildcards, but be careful. Look at this:

PS C:\test> dir | where {$_.name -match "test?.txt"}

   Directory: Microsoft.PowerShell.Core\FileSystem::C:\test

Mode                LastWriteTime     Length Name
----                -------------     ------ ----
-a---        10/22/2007   9:59 AM         86 contest.txt
-a---        10/22/2007 10:06 AM        136 test.txt

Compared to:

PS C:\test> dir | where {$_.name -like "test?.txt"}

   Directory: Microsoft.PowerShell.Core\FileSystem::C:\test

Mode                LastWriteTime     Length Name
----                -------------     ------ ----
-a---         8/29/2007 10:21 AM        126 test1.txt
-a---         8/29/2007 10:21 AM        136 test2.txt

If I'm looking for files that start with test and then any single character, the latter approach is better. Powershell offers many ways to match and find strings, including regular expressions.

Run:
PS C:\test> help about_comparison_operators

to learn more.

_____________________________

Jeffery Hicks
Windows PowerShell MVP
SAPIEN Technologies - Scripting, Simplified. www.SAPIEN.com

(in reply to gabrie)

Post #: 4

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