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Scripting Games Commentary: IX Using AD modules

There were a lot of entries that used the Quest or Microsoft Active Directory modules. These modules are great. I use them all of the time – the Quest cmdlets more than the Microsoft but that is a function of the environments I work in. For production use I completely and utterly recommend them. For...

Posted to Richard Siddaway's Blog by RichardSiddaway on Mon, May 9 2011
Filed under: Filed under: PowerShell and Active Directory, PowerShell V2, Scripting Games
Scripting Games Commentary: VIII Creating Objects

I saw a lot of code like this during the games 001 002 003 004 005 006 007 008 009 010 011 $comp = Get-WmiObject -Class Win32_ComputerSystem $os = Get-WmiObject -Class Win32_OperatingSystem $myobject = New-Object -TypeName ...

Posted to Richard Siddaway's Blog by RichardSiddaway on Sat, May 7 2011
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Commentary: VII Temporary files

During the Scripting Games contestants were asked to create a new temporary file with a random name. All sorts of algorithms were produce to do this – involving get-random, the date and peoples own algorithms – some of them were very inventive. There’s an easier way. The System...

Posted to Richard Siddaway's Blog by RichardSiddaway on Mon, May 2 2011
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Commentary: V – Remoting

In PowerShell we have a number of ways to perform actions on remote machines. Many of the scenarios in the Scripting Games introduced the need to perform some action on a remote machine. Many of the solutions involved creating sessions, using invoke-command and then tearing down the sessions. WHY? The...

Posted to Richard Siddaway's Blog by RichardSiddaway on Thu, Apr 28 2011
Filed under: Filed under: PowerShell V2, Scripting Games
Testing a path

Until recently VBScript was king for admin scripting in the Windows environment. This set up a certain way of doing things in people’s minds. I saw a lot of that in the Scripting Games. One example that comes to mind is testing if a path exists. In PowerShell we can do Test-Path -Path c:\test\test1.txt...

Posted to Richard Siddaway's Blog by RichardSiddaway on Fri, Jun 4 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games comments X: String Substitution 2

Noticed something like this while judging scripts last week PS> $comp = Get-WmiObject -Class Win32_ComputerSystem PS> $mem = ($comp.TotalPhysicalMemory / 1GB).ToString() + "GB" PS> $mem 2.74846267700195GB The value was been divided by 1GB – good - and then being converted...

Posted to Richard Siddaway's Blog by RichardSiddaway on Sat, May 8 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments IX: test-path

One more event to go after today and the Games begin to wind down. I’ve looked at over 1000 scripts – mainly PowerShell – over the course of the Games and have been very impressed with the standard of the entries. There have been some very innovative answers – I suspect that some of the innovation...

Posted to Richard Siddaway's Blog by RichardSiddaway on Thu, May 6 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments VIII: Creating Objects

One thing we have to do quite frequently is create an object and populate some variables. In PowerShell v1 we would do something like this 001 002 003 004 005 006 007 008 $r = Get-WmiObject -Class Win32_OperatingSystem $system = New-Object System...

Posted to Richard Siddaway's Blog by RichardSiddaway on Wed, May 5 2010
Filed under: Filed under: PowerShell V2, Objects, Scripting Games
Scripting Games Comments VII: File Names

In a number of the events it has been necessary to play around with file names. I’ve seen a number of ways to get the actual file name ie. without the extension. The easiest way I know is to use the basename property. Get-ChildItem | where {!$_.PSisContainer} returns a list of files – it...

Posted to Richard Siddaway's Blog by RichardSiddaway on Wed, May 5 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments VI: String Substitution

String substitution is one of my favourite bits of PowerShell. If you’ve not seen it before the idea is that you can substitute a variable into a double quoted string. Note that single quote strings won’t work. As an example PS> $colour = "red" PS> "The balloon is $colour"...

Posted to Richard Siddaway's Blog by RichardSiddaway on Tue, May 4 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments – Writing Lines

No - not what you did at school when you got caught! Looking at the scripts submitted for the games I’ve seen a number of ways of writing out a new line – including calls to the System.Environment class. We normally use Write-Host to write a line Write-Host “ some text” PowerShell has...

Posted to Richard Siddaway's Blog by RichardSiddaway on Tue, May 4 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments V

I thought this was a clever way to separate the hive from the key when I saw it PS> $key = 'HKEY_CURRENT_USER\Software\ScriptingGuys\2010ScriptingGames' PS> $base, $array = $key.split('\') PS> $base HKEY_CURRENT_USER PS> $array Software ScriptingGuys 2010ScriptingGames PS>...

Posted to Richard Siddaway's Blog by RichardSiddaway on Mon, May 3 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments IV

This one doesn’t affect the way PowerShell runs it is just unnecessary typing. You don’t need to put a semi-colon at the end of each line $proc = Get-Process; $proc | where {$_.Name -like "s*"}; PowerShell is more than happy for this $proc = Get-Process $proc | where {$_.Name -like "s...

Posted to Richard Siddaway's Blog by RichardSiddaway on Mon, May 3 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Ping, Ping, Ping

If you’ve used VBScript in the past you will remember using Win32_PingStatus to test the connectivity to a remote machine. In the 2010 Scripting Games we’ve seen a lot of scripts testing if a remote machine can be contacted. Many of the scripts contain code of the form $query = "Select * from Win32_PingStatus...

Posted to Richard Siddaway's Blog by RichardSiddaway on Sun, May 2 2010
Filed under: Filed under: PowerShell and WMI, PowerShell V2, Scripting Games
Scripting Games Comments III

This one jumped out at me. When reducing a number of bytes to megabyte or kilobytes remember that we have constants in PowerShell to help us. How many kilobytes in 402653184? In VBScript we would have had to do this PS> 402653184 / 1024 393216 In PowerShell I would do this PS> 402653184 ...

Posted to Richard Siddaway's Blog by RichardSiddaway on Sat, May 1 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments II

With Event 5 now available http://blogs.technet.com/heyscriptingguy/archive/2010/04/30/2010-scripting-games-advanced-event-5.aspx http://blogs.technet.com/heyscriptingguy/archive/2010/04/30/2010-scripting-games-beginner-event-5.aspx we have reached half way. This event is concerned with retrieving information...

Posted to Richard Siddaway's Blog by RichardSiddaway on Fri, Apr 30 2010
Filed under: Filed under: PowerShell V2, Scripting Games
Scripting Games Comments I

I’m going to produce a few general posts with comments about the scripts I’ve seen. Some specific points I’ll save until after the Games as they may affect the way you write your entries. The Events in this years Games are very admin orientated and could well be representative of the sort of tasks...

Posted to Richard Siddaway's Blog by RichardSiddaway on Thu, Apr 29 2010
Filed under: Filed under: PowerShell V2, Scripting Games

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