bash

Nothing special in my .bashrc, just whatever came with lubuntu. Here are the only interesting tweaks. The prompt is two lines, first line = $? from the previous command, then some normal stuff; second line is whatever you type for a command, allows triple clicking and just get the command with no prompt cruft.

  ...
  if [ "$color_prompt" = yes ]; then
      PS1="\[\033[01;32m\]\$?] ${debian_chroot:+($debian_chroot)}\[\033[01;34m\]\u\[\033[01;32m\]@\h\[\033[00m\] \[\033[01;34m\]\w\[\033[00m\] \$\n"
  else
      PS1="\$?] ${debian_chroot:+($debian_chroot)}\u@\h \w \$\n"
  fi
  unset color_prompt force_color_prompt
  ...
  export PAGER=~/bin/vimpager

My .inputrc, allows any readline enabled prog like pgsql to have command line editing and completion:

  set editing-mode vi
  set completion-ignore-case on
  Control-j: menu-complete
  Control-k: menu-complete-backward
  set completion-map-case on

In general, don't use set -o vi on the cmd line or in .bashrc, use .inputrc so that everyone who can play does play.