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What else? PowerShell, Code, Tips, etc.

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Checking Disk Usage

Here's a function I have in my profile, I use it to do a quick disk usage check on servers:

Function Get-Disk { Param($computer) $disks = gwmi -computername $computer Win32_LogicalDisk -Filter 'DriveType = 3' $disks | %{ New-Object PSObject -Property @{ Drive=$_.DeviceID; Capacity="{0:n} GB" -f ($_.Size / 1GB); Used="{0:n} GB" -f ($_.FreeSpace / 1GB); } } }

Here's an example of running this function:

[PS:8] Get-Disk server01 Drive Used Capacity ----- ---- -------- C: 4.58 GB 68.25 GB E: 64.18 GB 598.40 GB F: 238.62 GB 598.40 GB

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PowerShell Links for Friday 5/21/10

Two PowerShell scripts for retrieving user info from Active Directory –Rick Vanover shows you how to use the AD PowerShell module to find user accounts with non-expiring passwords and display phone number values for all user accounts.

Stsadm to Windows PowerShell mapping (SharePoint Server 2010) –a comprehensive list of SharePoint stsadm operations and the corresponding PowerShell counterparts.

Ten Steps to PowerShell Scripting with Office Communications Server 2007 R2 –an in depth post on working with PowerShell and OCS WMI classes.

Outputting Text Data to File –Trying to figure out how to output data from PowerShell to a text file? This tip from PowerShell.com shows you how.

SQL University – Powershell Week – Thomas LaRock takes DBAs to school with some PowerShell 101.

Using alternate credentials with the FileSystem in PowerShell –PowerShell MVP Joel Bennet's Impersonation Module...very awesome stuff.

PowerShell 2.0: One Cmdlet at a Time #102 Disable-PSRemoting –Another post in the series, this time on the Disable-PSRemoting cmdlet.

Quick Tip: Renaming Tabs in the ISE –a post from the PowerShell team blog on renaming ISE tabs.

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Get-Command: Not Just for Cmdlets

Here's another miscellaneous tip..well, it's not really that much of a tip but here goes...

You know you can use Get-Command to get information about cmdlets, but you can also get detailed info about executables, for example:

get-command cmd.exe | fl fileversioninfo,path

The above produces the following output:

[PS:28] get-command cmd.exe | fl fileversioninfo,path FileVersionInfo : File: C:\Windows\system32\cmd.exe InternalName: cmd OriginalFilename: Cmd.Exe.MUI FileVersion: 6.1.7600.16385 (win7_rtm.090713-1255) FileDescription: Windows Command Processor Product: Microsoft® Windows® Operating System ProductVersion: 6.1.7600.16385 Debug: False Patched: False PreRelease: False PrivateBuild: False SpecialBuild: False Language: English (United States) Path : C:\Windows\system32\cmd.exe

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Quick List of PowerShell Profiles

I can never remember the names or locations of all the profiles, but I can remember this:

$profile | fl -Force

Here's an example of the output:

[PS:27] $profile | fl -Force AllUsersAllHosts : C:\Windows\System32\WindowsPowerShell\v1.0\profile.ps1 AllUsersCurrentHost : C:\Windows\System32\WindowsPowerShell\v1.0\Microsoft.Po... CurrentUserAllHosts : C:\Users\Administrator\Documents\WindowsPowerShell\prof... CurrentUserCurrentHost : C:\Users\Administrator\Documents\WindowsPowerShell\Micr... Length : 83

The output is truncated, but you get the idea...

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Send an Email

PowerShell v2 has what seems to still be a relativley unknown cmdlet that allows you to send email. Here is an example of how to use it:

Send-MailMessage -To [email protected] ` -From [email protected] ` -Subject "Test" ` -Body "Test" ` -SmtpServer smtp.domain.com

On the otherhand, if you are still using v1, you can use the good ole System.Net.Mail classes:

function Send-Email { param($to, $from, $subject, $body, $smtpServer) $msg = new-object Net.Mail.MailMessage $smtp = new-object Net.Mail.SmtpClient($smtpServer) $msg.From = $from $msg.To.Add($to) $msg.Subject = $subject $msg.Body = $body $smtp.Send($msg) }

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Validate an IP Address

Here is a function to validate an IP address. If valid, it returns $true, otherwise it returns $false.

function Test-IsValidIP ($ip) { if($ip -as [System.Net.IPAddress]) { $true } else { $false } }