The -WhatIf Trap Hiding in ForEach-Object
A dry run that quietly lies to you. Why ForEach-Object's property shorthand returns nothing under -WhatIf, and the one-line fix.
PowerShell craft · Note 1 ↗EXPLORE THE NOTEBOOK
Tech.
Notes from the command line, the workbench, and the vintage computer shelf.
80published notes
Every note in Tech
Newest first · 2 / 7Monitoring Azure Resource Costs with PowerShell
Find out which resource groups are eating your Azure budget, straight from PowerShell, no portal clicking required.
PowerShell craft · Note 7 ↗Automating User Offboarding in Azure AD with PowerShell
One script that locks a departing user out, cleans up their groups and licenses, and keeps their mail, with a CSV record of every step.
The Microsoft Graph toolbox · Note 5 ↗Adding Domain Groups to Local Administrators on Remote PCs with PowerShell
Put a domain group into the local Administrators group on a list of computers (or take one out) over PowerShell remoting, with a result for every machine and -WhatIf first.
Local admin, done right · Note 4 ↗Check MECM Software Update Deployment Status with PowerShell
One object per update deployment with targeted, compliant, failed and unknown counts, so you can spot the deployments that need you.
Windows Update, untangled · Note 8 ↗Deploy the Most-Needed Updates in MECM with PowerShell
Find the updates the most machines are actually missing, bundle them into a group, and deploy them to a pilot collection, with a WhatIf preview first.
Windows Update, untangled · Note 7 ↗Upgrade a Windows Edition with a MAK Key from PowerShell
Install a product key, activate it and confirm the edition actually changed, without the key ever landing in a script file or a log.
Packaging with ConfigMgr · Note 5 ↗Create an MECM Package and Program from PowerShell
Turn "wrap this script in a package and push it to the DPs" into one command, with a dry run before anything gets created.
Packaging with ConfigMgr · Note 1 ↗Clean Reinstall of the Microsoft Graph PowerShell Modules
When Graph cmdlets start throwing assembly errors, it's almost always mixed module versions. This removes every copy and puts back one matching set.
The Microsoft Graph toolbox · Note 1 ↗Report on Everything an Entra ID Group Touches with Microsoft Graph
Before you rename, rescope or delete a group, find out what it's wired to. Members, owners, licenses, apps and Intune policies, in one report.
The Microsoft Graph toolbox · Note 4 ↗Exporting Active Directory Computer Objects to CSV
A computer inventory straight out of AD, with OS build, last logon, password age and OU in one tidy CSV, ready for audits or a stale-machine cleanup.
Keeping Active Directory tidy · Note 4 ↗Convert CBR Comics to CBZ, with Optional WebP Pages
Turn a folder of CBR comics into CBZ with 7-Zip, and optionally shrink the pages to WebP with cwebp or ImageMagick, testing every file before anything is replaced.
Archive conversion workshop · Note 4 ↗