install script for rbenv

install-rbenv.sh

#!/usr/bin/env bash
################################################################################
# rbenv w/ ruby-build install script. See https://github.com/rbenv/rbenv
# Install rbenv using,
#  $ ./install-rbenv.sh
#
# Then install & set your preferred global version of Ruby using,
#  $ rbenv install 2.6.5 -v
#  $ rbenv global 2.6.5
################################################################################

if [ ! -r ~/.rbenv/ ]; then
    git clone https://github.com/rbenv/rbenv.git ~/.rbenv
    cd ~/.rbenv && src/configure && make -C src
    echo '
# rbenv
export RBENV_ROOT="$HOME/.rbenv"
export PATH="$RBENV_ROOT/bin:$PATH"
if command -v rbenv 1>/dev/null 2>&1; then
eval "$(rbenv init -)"
fi' >> ~/.bashrc
    source ~/.bashrc
    exec "$SHELL"
fi

if [ ! -r ~/.rbenv/plugins ]; then
    git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build
fi