This is Episode 32 of the Get-Scripting podcast. Tune in to listen to us talk and interview people about PowerShell.
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Intro:
Alan:
Jonathan:
PowerShell Deep Dive Book
PowerShell News:
Windows 8 / Server 2012 released, i.e. PowerShell v3!
Available for downlevel OSs.
http://www.microsoft.com/en-us/download/details.aspx?id=34595
Scripting IDE showdown / slowdown?
PowerShell Plus is now free:
http://www.idera.com/Free-Tools/PowerShell-Plus/
PowerShell SE is no more?
http://powerwf.com/products/powerse.aspx
PowerGUI no longer in development?
PowerShell ISE the way ahead?
PowerShell Summit - Session Announced
http://poshoholic.com/2012/11/02/powershell-summit-community-sessions-list/
UKVMUG
http://www.vmug.com/p/cm/ld/fid=212
PowerShell Resources:
Get Regular Expression matches (DNS)
http://enterpriseadmins.org/blog/scripting/get-regular-expression-matches/
PowerScripting - the wives special
http://powerscripting.wordpress.com/2012/05/28/episode-187-teresa-scriptingwife-wilson-and-staci-halswife-rottenberg/
PowerShell Tip
Insert String Every N Characters
http://blog.expressionsoftware.com/2010/03/insert-string-every-n-characters.html
This PowerShell v2 script inserts a string every N characters. The interval is specified using the regex repetition operator, {min,max}.
$a = 'abcdefghijklmnopqrstuvwxyz'
([regex]::matches($a, '.{1,3}') | %{$_.value}) -join ' '
([regex]::matches($a, '.{1,8}') | %{$_.value}) -join '..'
([regex]::matches($a, '.{1}') | %{$_.value}) -join '-'
#output
abc def ghi jkl mno pqr stu vwx yz
abcdefgh..ijklmnop..qrstuvwx..yz
a-b-c-d-e-f-g-h-i-j-k-l-m-n-o-p-q-r-s-t-u-v-w-x-y-z
Removal of $_ and also $PSItem in PS v3
In PowerShell, the variable "$_" has special importance. It works like a placeholder in scenarios like this one:
PS> Get-ChildItem $env:windir | Where-Object { $_.Length -gt 1MB }
In PowerShell v3, there is an alias for the cryptic "$_": $PSItem. So now code can become more descriptive:
PS> Get-ChildItem $env:windir | Where-Object { $PSItem.Length -gt 1MB }
Then again, in PowerShell v3, "$_" isn't necessary in many scenarios anymore at all. You could also write:
Get-ChildItem $env:windir | Where-Object Length -gt 1MB
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