dpkg --listfiles bashを参考をコピー
/etc/bash_completion.d
/etc/bash_completion
/usr/share/bash_completion
.bashrcに以下を追記
# enable bash completion in interactive shells
if [ "$PS1" -a -f /etc/bash_completion ]; then
. /etc/bash_completion
fi
cygwin bash
http://www.mars.dti.ne.jp/~sohda/cygwin/setenv.html
