Revisiting Microsoft/Sysinternals Du as a batch file

My tips for using Sysinternals’ Du.exe were well received last week, and my former coworker Charlie mentioned a GUI tool called Windirstat that I had completely forgotten about. For the command-line averse, it’s an incredibly useful tool.

But there’s one thing that Du.exe does that makes the CLI worthwhile. It will output to CSV files for further analysis. Here’s the trick.

DU -L 1 -Q -C \\SERVERNAME\C$\ >> servers.csv

Sub in the name of your server for servername. You have to have admin rights on the server to run this, of course.

For even more power, run this in a batch file containing multiple commands to query multiple servers, say, in your runup to Patch Tuesday. Open the file in your favorite spreadsheet, sort on Directory Size, and you can find candidates for cleanup.

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How to clean up a Windows server

From time to time, Windows patches will fail to install because a server doesn’t have enough space to install them. Finding the ginormous files are that are hogging all the space on the C drive is really tedious if you do it by clicking around in Windows Explorer, but there’s a better way.

Download the free Sysinternals Du.exe utility and you can find the behemoths in minutes, if not seconds. Read more

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