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A Bash script to install Ruby 2.3 on the Raspberry Pi (Raspbian)
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#!/bin/bash | |
# ----------------------------------------------------------------------- | |
# Installs Ruby 2.3 using rbenv/ruby-build on the Raspberry Pi (Raspbian) | |
# | |
# Run from the web: | |
# bash <(curl -s raw_script_url_here) | |
# ----------------------------------------------------------------------- | |
# Set up variables | |
bold="\033[1m" | |
normal="\033[0m" | |
# Welcome message | |
echo -e "\n${bold}This will install Ruby 2.3 using rbenv/ruby-build." | |
echo -e "It can take about 2 hours to compile on the Raspberry Pi.${normal}" | |
# Prompt to continue | |
read -p " Continue? (y/n) " ans | |
if [[ $ans != "y" ]]; then | |
echo -e "\nQuitting...\n" | |
exit | |
fi | |
echo | |
# Time the install process | |
START_TIME=$SECONDS | |
# Check out rbenv into ~/.rbenv | |
git clone https://github.com/rbenv/rbenv.git ~/.rbenv | |
# Add ~/.rbenv/bin to $PATH, enable shims and autocompletion | |
read -d '' String <<"EOF" | |
# rbenv | |
export PATH="$HOME/.rbenv/bin:$PATH" | |
eval "$(rbenv init -)" | |
EOF | |
# For new shells | |
echo -e "\n${String}\n" >> ~/.bashrc | |
# For current shell | |
eval "${String}" | |
# Install ruby-build as an rbenv plugin, adds `rbenv install` command | |
git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build | |
# Install dependencies | |
# See: https://github.com/rbenv/ruby-build/wiki#suggested-build-environment | |
sudo apt-get update | |
sudo apt-get install -y autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev | |
# Install Ruby 2.3, don't generate RDoc to save lots of time | |
CONFIGURE_OPTS="--disable-install-doc --enable-shared" rbenv install 2.3.0 --verbose | |
# Set Ruby 2.3 as the global default | |
rbenv global 2.3.0 | |
# Don't install docs for gems (saves lots of time) | |
echo -e "gem: --no-document" > ~/.gemrc | |
# Print the time elapsed | |
ELAPSED_TIME=$(($SECONDS - $START_TIME)) | |
echo -e "\n${bold}Finished in $(($ELAPSED_TIME/60/60)) hr, $(($ELAPSED_TIME/60%60)) min, and $(($ELAPSED_TIME%60)) sec${normal}\n" |
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