[PLUG] bash completion and SSH "HashKnownHosts"

[JP Vossen <jp@jpsdomain.org>]

Last night during my bash preso at HMS, we were talking about bash 
completion and Ian Macdonald's awesome code from
http://freshmeat.net/projects/bashcompletion/ (which is included but not 
enabled in Debian/Ubuntu).

Someone mentioned the SSH auto-completion feature, which uses your 
~/.ssh/known_hosts file, but I'd wondered about since my hostnames are 
hashed in that file.  I didn't say anything since I'd never gotten 
around to looking into it.

Here's the issue: https://bugs.launchpad.net/ubuntu/+source/bash/+bug/42382

Briefly: to prevent some worm "island hopping" behaviors, as of Breezy, 
Ubuntu sets /etc/ssh/ssh_config "HashKnownHosts yes".  If you want SSH 
auto-completion to work you can turn that off there or in ~/.ssh/config. 
  You might also have to clear and re-populate your known_hosts file, 
the bug isn't clear and I didn't test it.  Being an InfoSec geek I'm 
leaving mine as-is.

Later,
JP
----------------------------|:::======|-------------------------------
JP Vossen, CISSP            |:::======|        jp{at}jpsdomain{dot}org
My Account, My Opinions     |=========|      http://www.jpsdomain.org/
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