Alan's Blog

"Yeah. I wrote a script that will do that."

Export to HTML with Style Sheet Header

Posted on February 25th, 2017

 

This a modification of something I picked up on the web.  It allows you to export to an HTML file with a centered table and centered title.  Any number of properties in the data are made into auto-sized columns.

 

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A Dot Source Reminder for Advanced Functions

Posted on February 25th, 2017

One of the problems with writing advanced functions is that new PowerShell users think that they don’t do anything.  Frankly, I couldn’t figure out a way to get a notification to work, so I reached out to the sponsor for the Charlotte PowerShell User Group, Microsoft PFE Brian Wilhite. Brian sent me some code  which I incorporated into the following snippet:

If you expect to have the end-user save the function with code calling it at the bottom of the script, try this version which won’t prompt if there is added text at the bottom:

Put either bit of code at the bottom of any advanced function. If the script runs inside the ISE, you will get something like this:

If you run it inside the PowerShell console you will see:

If you use the shell menu option to Run with PowerShell, it adds a pause so the script does not close.  Note that the colors are not rendered properly in the example text  — the first line has green text, following lines display with default colors.

Update:  if the code above doesn’t pause when you use “Run with PowerShell” from the shell context menu, replace if (([Environment]::GetCommandLineArgs()) -match '&'){pause} with if ([regex]::IsMatch([Environment]::GetCommandLineArgs(), 'powershell_ise') -eq $false){Pause}. For more on this see this post.

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Fix User’s Home Directory Permissions with Take Ownership

Posted on February 15th, 2017

Fix-HomeDrivePerms.ps1 is a PowerShell script which attempts to reset folder security when the permissions are really hosed.  It uses a take ownership function, Set-Owner, by Boe Prox, instead of takeown.exe, but does shell out to iCacls.exe.  I wrote this to fix home directories where a user might be logged on with files open a the time, and so it doesn’t rip out the old permissions and replace.

This will require a some editing to run, and this code fragment is set up to do one user folder at a time.  But it might get you going in the right direction.

Script Text

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Another User Folder Security Reset Script

Posted on February 11th, 2017

This simple batch file resets the inheritance on users folders and then grants them “modify” using the builtin icacls.exe.   This script does not address issues which require you to take ownership — I will post one that does that soon.

I added the “echo” command so you can see what it is doing — remove “echo” when you are ready to run it.

Remember that the variable character for batch files is the percentage sign “%” which must be escaped with a second percentage sign inside a batch file. So if you intend to run this from a command line, you would need to use only a single percentage sign for each variable.

PushD does a temporary drive mapping and changes you to the folder. Popd is the undo for PushD. Both are available inside of PowerShell.

The “FOR” command reads like this: For each directory assign the variable %u.  Run iCacls  to reset security, traversing the folders and continuing  on errors.  The expression %~fu expands %u to a fully qualified path name. The semi-colon allows multiple commands to be stacked. The next iCacls command grants the user modify based on the assumption that the username and folder name are the same.  %~du expands %u to a drive letter only – here, the temporary drive you got from the pushd command.

Variable assignments in the batch for command are case sensitive. If you run “FOR /?” from a command line, you will see a long list of interesting things that the tilde modifier can do with a batch variable.

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Set Share Folder Icon for Server 2012 and Windows 10

Posted on February 5th, 2017

I like to look at a folder and know whether or not it is shared. In earlier Windows OS there was a hand overlay which shows you this information. In Server 2012, this indicator has been omitted. Set-SharedFolderIcons.ps1 lets you use the icon of your choosing to restore this hint that a folder is shared.   There is a bit at the bottom of the script which you may edit:

The icon is generated with the Icon Extractor, and is used to preview your choice like this:

Confirm Icon Dialog

The script will enumerate shares, skipping admin shares, and, on a domain controller, it skips Sysvol and NetLogon shares.  The list goes to Out-Gridview, and selected shares get the new icon by editing the desktop.ini file.

Script Text

 

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Adding Terminal Services Information to User Reports

Posted on February 4th, 2017

Add-ADTSInfo.ps1 adds TerminalServicesHomeDrive, TerminalServicesHomeDirectory, TerminalServicesProfilePath and AllowLogon as additional members returned by a query of Active Directory user objects.  As you may know, when looking at a user’s properties in the Active Directory Users and Computers MMC there is a tab for these fields.  However, if you look at the properties of a user object, these items simply aren’t there.  There are a few articles and scripts addressing this problem, and you will find that the only way to get the data is by binding to each individual user object and using the a method like this: $ADSIUser.psbase.InvokeGet(‘TerminalServicesProfilePath’).

My script differs from others in that you can pipe an object containing user objects with any properties, and it will add the fields listed above to your results.  I added sorting of the new resulting so that the property names are in order.  This is an advanced function with comment based help.

Script Text

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Combine CSV Files to XLSX File with Worksheets

Posted on February 4th, 2017

Three years ago, I posted CombineXLSheets.vbs, a vbScript which allows you to drop and drag Excel spreadsheets onto it and have them combined into a single workbook file with multiple worksheets.  Now that I am working in PowerShell, I have found the need to consolidate CSV files.  Parts of  Combine-CSVFilesToWorksheets.ps1 come from code ported from the vbscript, and this script does a similar job.

I have been experimenting with input validation choices, and you can see some of it here.  One of the things I learned is that a single parameter can have more than one script validations using ValidateScript.  I also decide that the error handling for this is pretty ugly, and moved other input validation into the body of the script.

The script requires that you specify the folder with the CSV files, and the output file for the combined data.  By default the worksheets are named with the base name of the CSV file, and autofit is applied to the columns.  You may optionally turn off autofit, and can delete all of the CSV files when done or the CSV folder itself.  Because this is an advanced function, you can use Get-Help for full help.  The script also supports ShouldProcess (-WhatIf ).

This script requires Excel.

Script Text

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Consolidating Data For Report: Getting from Group-Object to CSV

Posted on February 4th, 2017

I am working on some scripts which show AD domain controllers by their site.  My goal was to have the data combined so that  each site has a single row, with the server name and IP address for each site being shown joined by semi-colons.


 

 

 

 

 

None of the examples for doing this worked for me. But this did:

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Export to XLSX without Excel: Export-XLSX.ps1 Revisited and Tweaked

Posted on January 30th, 2017

I often look at the code of others with respect and admiration. Peter Kriegel (Germany) wrote Export-XLSX.ps1, an amazing script which lets you export data into a real XLSX file without Excel being installed. The script also enables you to directly append worksheets to XLXS files. His website, http://www.admin-source.de, hasn’t been updated in a while, and the automatic translate function is broken. It isn’t clear to me how to reach Peter, as I typically don’t post the code of others with so few changes, so I want to be clear — this isn’t my work.

I converted the original script to an advanced function, and made sure the Help was functioning right.  The only limitation is with formatting, which means it will look pretty much like a file from Export-CSV.  Nonetheless, if you have scripts running on servers where you really don’t want to install Excel, this is an excellent function to use.  The script is heavily commented and has examples in the help.

Script Text

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Get the NetBIOS AD Domain Name from the FQDN

Posted on January 30th, 2017

I hate using NameTranslate, because it is a COM object, and because the output is often really hard to get into a clean, trimmed string.  The netBIOS name isn’t a part of the AD domain object, but I suspected that the information could be gotten using a LDAP query.  My searching lead me to a post on StackFlow.  It wasn’t PowerShell, but it did give me an interesting hint.  The filter’s objectcategory was “CrossRef”.  I used this to port the code to PowerShell:

This query is quick, and avoids the formatting problems with NameTranslate.  There is a large table of LDAP queries on TechNet, but this one isn’t in the list.

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Please Note

All the scripts are saved as .txt files. Newer files have a "View Script" button which will let you save or open a script in notepad. For earlier posts, the easiest way to download with IE is to right click on the link and use "Save Target As". Rename file from Name_ext.txt to Name.ext.

To see a full post after searching, please click on the title.

PowerShell Scripts were written with Version 3 or 4.

https connections are supported.

All new users accounts must be approved, as are comments. Please be patient. It is pretty easy to figure out my email address from the scripts, and you are welcome to contact me that way.

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