Checking for Mangled Attributes in Windows 2000 Forests with Adfind

 From link:

"The Microsoft Exchange 2000 schema defines three non-Request for Comments (RFC)-compliant attributes: houseIdentifier, Secretary, and labeledURI. The Microsoft Windows 2000 InetOrgPerson Kit redefines the Secretary attribute and the labeledURI attribute. The adprep /forestprep command in Microsoft Windows...

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Installing Package Groups in Ubuntu Server

To re-run the package group selection from the Ubuntu server installation use:

sudo tasksel

If you want to view the avalable tasks use:

sudo tasksel --list-tasks

Just make sure you have the install CD in.

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Flushing the DNS Cache in OS X and Linux

In Leopard do:

 sudo dscacheutil -flushcache 

In Linux (Ubuntu):

 sudo /etc/init.d/nscd restart 

Update:

In OS X Yosemite:

 sudo discoveryutil mdnsflushcache 
 In OS X Mavericks, Lion, Mountain Lion: 
 sudo killall -HUP mDNSResponder 
 
...
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Replacing the OS X Login Image

If you need to replace the system default image in Leopard OS X 10.5. You can do this easily from the terminal:

 sudo cp /System/Library/CoreServices/DefaultDesktop.jpg /System/Library/CoreServices/DefaultDesktop.jpg.bak 

Then just copy in the image you want (you really want this...

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