Archive for August, 2007

rsync and ssh

26 August 2007

No, it doesn’t have anything to do with boy bands and being quiet. It’s how I manage files between computers without giving away the farm.

When I got back from vacation, I happily plugged my external usb hd into my desktop to move my images over for editing. I’m not real good at the organization stuff, however. Some of the images I thought I had were missing because they were in another directory on the laptop. When I tried to move them over using rsync, I kept getting the

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!

warning.

Now, I could have just moved the external hd from the desktop to the laptop, copied the relevant directories, and then moved the external hd back. That would have been the easy, practical way to solve the problem. So, of course, that’s exactly what I didn’t do. What I did was, first, procrastinate for a couple of weeks. Then, when I finally got off my butt to do something about it, I got all obsessive-compulsive geeky and had to fix rsync to move the stuff.

Turns out that rsync relies on ssh to provide secure file transfers between hosts (I knew that!). It took me a long time and a lot of clustying to finally guess that I had to delete the existing keys in my known_hosts file because a computer with a new operating system on it is a different host than it was with the old operating system (I knew that, too!).

Note: because I only use rsync between 2 computers, I simply deleted all entries in the known_hosts file. If I were using it between more hosts, I would’ve had to just delete the entries for host “desktop,” leaving the others intact.

Now that I’ve gotten rsync working and I’ve copied the directories I needed to my desktop, I can procrastinate for another few weeks before I post the pix from my vacation.

Oh, what the heck. Here’s a teaser. This is a picture of the house and barn from the far corner of one of the fields:


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Down on the (un-given-away) farm


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Day of the Triffids

13 August 2007

I just spent a week surrounded by cows ‘n corn and not much else. After the first 3 days, I more or less got over my internet withdrawals. The lack of people helped a lot. This is what it looked like first thing in the morning:


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Morning mountain mist


If you look closely, you can make out the house over the hill about a half mile away.

This is the view in the other direction (no houses there):


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Morning river mist


There’s a river in front of the mountain, just beyond those elms in the middle of the picture. While I was tramping around near the river the next day, this alien-looking plant was pointed out to me by my brother-in-law:


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Triffids


It was six feet tall and looked like something out of a John Wyndham novel. My book of wildflowers of the Northeast failed me, but after much googling (clustying, actually, since Google is evil) I found that this plant really is alien. According to the National Invasive Species Information Center the Common Teasel (Dipsacus fullonum L.) was accidentally introduced to the U.S. in the 1700s.

Seems a long time to hold a grudge, but there you have it. Apparently, these plants never bothered to wait in line to become legal immigrants, instead secreting themselves amongst legal seeds. I, for one, have no problem uprooting such invaders, as long as they can’t blind me.

I have more pix from the trip. I’ll put ’em up soon.