Quick Vi mode for Bash & Readline, with superminimal PS1

bashrc

set -o vi
bind -m vi-insert "\C-l":clear-screen
PS1='[\u@\h:\W] \$ ' # plain & static liquidprompt-esque prompt

inputrc

set editing-mode vi
set keymap vi-insert
"\C-l": clear-screen # CTRL-L
set keymap vi-command

setup.sh

#!/bin/bash

GIST_ID=dschep/dd9cf12434532252741b

if type -p curl &> /dev/null; then
    function _get () { curl -kLO "$1"; }
elif type -p wget &> /dev/null; then
    function _get () { wget "$1"; }
else
    function _get () { echo "cannot find curl or wget!"; exit 1; }
fi

[ -f bashrc ] || _get https://gist.github.com/$GIST_ID/raw/bashrc
[ -f inputrc ] || _get https://gist.github.com/$GIST_ID/raw/inputrc

cp bashrc ~/.bashrc
cp inputrc ~/.inputrc

Easy install with:

curl https://gist.githubusercontent.com/dschep/dd9cf12434532252741b/raw/setup.sh | bash

or

wget -qO- https://gist.githubusercontent.com/dschep/dd9cf12434532252741b/raw/setup.sh | bash