Good guess.  :2 is line 2, :3 is line 3

The answer to the second might also help clear up the first (if you are connecting to the same machine  using different names, or if you used to connect to a host/ip using one, but upgraded/changed the system (including host keys) then connect using another):

.bashrc is sourced during non-interactive shell actions (scripts, crontabs, etc), while .bash_profile or .profile is source during interactive shells (logins, etc).

If you set/use aliases or functions (can work like alias but can take args - $1 $2 $@ etc - in places middle of commands, not just append blindly at end of alias cmd line) to short-hand ssh host connections, you might check for 'triggerfish' or '192.168.2.124' and standardize on one. 



Ben

On Mon, Aug 29, 2011 at 7:23 AM, kitepilot@kitepilot.com <kitepilot@kitepilot.com> wrote:
You can also set these options in /etc/ssh/sshd_config or ~/.ssh/config
ET

kitepilot@kitepilot.com writes:
ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no user@box
YMMV...
ET  

Dazed_75 writes:  
1) I have a number of machines where I often ssh from one to another.  I
just did that with a regular pair and got:  
Warning: the RSA host key for 'triggerfish' differs from the key for the IP
address '192.168.2.124'
Offending key for IP in /home/larry/.ssh/known_hosts:2
Matching host key in /home/larry/.ssh/known_hosts:3
Are you sure you want to continue connecting (yes/no)? yes
Linux triggerfish 2.6.32-33-generic #72-Ubuntu SMP Fri Jul 29 21:07:13 UTC
2011 x86_64 GNU/Linux
Ubuntu 10.04.3 LTS  
I GUESS but do not KNOW that the known_hosts[2] and [3] refer to the 2nd
and 3rd or 3rd and 4th entries out of the 12 that exist.  I do NOT want to
be editing those all the time so does anyone know a way to avoid that?  
2) When I ssh into a machine, it is not clear what if any aliases from
.bashrc or .bash_profile are in play (from the originationg machine/user or
the target?  It often seems like neither.
--
Dazed_75 a.k.a. Larry  
The spirit of resistance to government is so valuable on certain occasions,
that I wish it always to be kept alive.
 - Thomas Jefferson
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--
---
Ben

python -c "exec(\"import math\\nprint ''.join(map(lambda x: chr(x), ( (ord('a')-(3*5)), int(math.sqrt(math.pi*76)*5+2), int(math.ceil(math.e)*28), int(math.floor(math.e)*35), long(abs(4%3*35+3)*2))))\")"