This article was first written in October 2007 for the BeezNest
technical website (http://glasnost.beeznest.org/articles/364).
On most GNU/Linux distributions, bash is able to read hostnames in /.ssh/known_hosts to autocomplete ssh commands. For security reasons though, hostnames are no longer stored in clear text in those files on most distributions, defeating this feature of bash's autocompletion.
To tell SSH (client) to not obfuscate hostname, just set the HashKnownHosts option to no in /etc/ssh/ssh_config.
