Remote Host Identification has Changed

I just reinstalled our main server. When I try to ssh into it I got an error:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
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IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.

Please contact your system administrator.
Add correct host key in /home/user/.ssh/known_hosts to get rid of this message.
Offending key in /home/user/.ssh/known_hosts:1
RSA host key for ras.mydomain.com has changed and you have requested strict checking.
Host key verification failed.

-----------------------------------------------------------

The reason behind this is because your local computer still has the old RSA host key stored in /home/your_account/.ssh/known_hosts.

The easiest way to solve this problem is simply delete that file or you can delete the host entry in the file.


Joseph

Time Ago

Ever wanted to show the user that something happened so many minutes/hours/days/etc ago? Apparently, RoR makes it super simple to do this. There is a method called:

time_ago_in_words

Simply include the time (from now) that you want to calculate - perhaps a created_at/updated_at field.

Easy!


W

Software Freedom Day

September 20th, 2008 is Software Freedom Day! If your interested in promoting and celebrating software freedom, check this out:

http://www.softwarefreedomday.org/


W

Alternating Table Row Colours

When listing data out in a table, it's always nice to have alternating row colours. This makes it infinitely easier to scan the table and much more enjoyable.

RoR makes it really simple to alternate row colours. A cycle function is given to aid in this task, and it simply cycles between the values given. By using this, you can specify your alternating class names here.

If you have more than one table, remember to call the reset_cycle function to reset the cycle.

Easy!


W

VMware Server: Adding a new HDD

I'm running WinXP through VMware Server (as it comes free and is in the Ubuntu repos!!!). It runs really, really well and am completely satisified with it. However, I wanted to add a new HDD to my VM.

Well, I did the obvious, which was to power down my VM and edit the settings. I went to go add a new vitual HDD and pre-allocated it (all the defaults).

I then powered on my VM and lo-and-behold, no new disk! What?!?!?! Well, I found a very nice little tutorial on YouTube that teaches you how to do it properly. Apparently, there's a few extra steps required inside of WinXP to detect and setup the newly added disk:

http://www.youtube.com/watch?v=z3GciNMYLlo

Hopefully, this'll help anyone that is stuck.


W

Ubuntu + Compiz Fusion plugins

Gutsy Gibbon already has Compiz Fusion packaged with it, but apparently, there are numerous plugins that can be added on as well!

This guy has written a lovely script to get you started:

http://ubuntuforums.org/showthread.php?t=620000

Enjoy!


W

Support ODF

I've recently been reading more and more material about open formats. Apparently, there's been a ripple in the pond, as Microsoft is trying to push through their own format, which is obviously inferior and not much of a standard at all (again, the usual Microsoft bullying antics).

I found an interesting link I'd like to share if anyone is passionate about this fight. It's to get your government to support the OpenDocument Format. I'd just like to share this with you guys:

http://www.fsf.org/campaigns/odf-letter-template


W