SSH Key-Based Authentication on RHEL6

You've set up your new Red Hat Enterprise Linux 6 box and you can ssh in using passwords with no problem.

But now you want to stop using passwords and start using keys. So you install your keys:

scp .ssh/id_dsa.pub me@example.com:.ssh/authorized_keys

But the system keeps prompting you for a password! The keys don't seem to work at all.

That might be because SELinux is preventing it because the proper attributes are not on the authorized_keys file. Or possibly you have permissions wrong on your .ssh directory. The solution:

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Solved: Mac Pro Losing Connection to USB Kinesis Keyboard

I've been having a frustrating problem lately. I use a Kinesis Advantage contoured keyboard and I love it. My current computer is a 2006 Mac Pro. The problem is that randomly the keyboard will cease to be recognized by the Mac. I wondered if the aging Mac was developing flaky USB controllers.

If I reboot the Mac (which I can do, since the mouse still works) everything is fine.

But a keyboard that randomly stops working is not a pleasant thing.

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Creating Open Packaging Conventions files with zip on OS X 10.6

The .docx format used by Microsoft is actually a collection of XML files (and other files) and can be opened with zip.

For example, on OS X you can use unzip at the command line to look at the OPC file like this (we'll unzip it into a directory called foo):

$ ls -l
-rw-r--r--@ 1 john  staff    13678 Feb  3 11:52 Ham.docx

Anonymizing Reviewer Identity in Microsoft Word 2011 with Ruby and Automator

Microsoft Word 2011 lets you turn on the Track Changes feature and distribute your files to friends and colleagues. You can then see their comments and corrections.

Now consider the case of an editor of a scientific journal. The workflow goes something like this:

  1. Receive article from fresh-faced graduate student.

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