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96 lines
3.0 KiB
96 lines
3.0 KiB
3 years ago
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#!/bin/sh
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# Bare Metal Alchemist, 2022
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#############################################
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# Lead - ♄ #
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#############################################
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# The most basic ingredient in an Alchemy recipe, lead is used in all
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# recipes in this repository to standardize some simple things that I
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# rely on to make scripts concise and pleasant to use
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# --------------- Escape Codes ---------------
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# These constants are used to add color and text formatting to the
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# terminal's output -- Further reading: ANSI Escape Codes
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RED="\e[0;31m"
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GREEN="\e[0;32m"
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BLUE="\e[0;34m"
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BOLD="\e[1m"
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ULINE="\e[4m"
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RESET="\e[0m"
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# --------------- Traps ---------------
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# Traps, in the case of shell scripting, listen for certain signals
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# that are broadcast by the system and execute a command in response
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# Make sure that ctrl+C consistently exits the script
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trap "exit" INT
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# Give informative error messages when we receive ERR
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trap 'echo -e "${RED}Oops!${RESET} Something went wrong on line $LINENO of this script. Exit code was $?" >&2' ERR
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# --------------- Environment Setup ---------------
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if [ -f .env ]; then
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export $(grep -v '^#' .env | xargs)
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else
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if [ -z $ALCHEMY ]; then
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echo "No .env file, this might cause some issues..."
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fi
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fi
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# --------------- Functions ---------------
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# Coding Moment: generally, whenever you see something with brackets
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# at the end of it, like this() or like(this), it's a function!
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# It takes inputs and gives (or does) something as an output
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# This one installs utilities to your OS (If you need them!)
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install_if_needed() {
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for package in "$@" # $@ means "all the arguments you passed
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do
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case $DISTRO in
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"debian")
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# TODO Better installation detection than "which"
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if [ -z $(which $package 2>/dev/null) ]; then
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echo "installing" $package
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sudo apt install -y $package
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else
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echo $package 'already installed!'
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fi
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;;
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"arch")
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if pacman -Qi $package &>/dev/null; then
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echo $package 'already installed!'
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else
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echo "installing" $package
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sudo pacman -S $package --noconfirm --needed
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fi
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;;
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"fedora")
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# TODO Better installation detection than "which"
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if [ -z $(which $package 2>/dev/null) ]; then
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echo "installing" $package
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sudo dnf install -y $package
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else
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echo $package 'already installed!'
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fi
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;;
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"mac")
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# TODO Better installation detection than "which"
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if [ -z $(which $package 2>/dev/null) ]; then
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echo "installing" $package
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brew install $package
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else
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echo $package 'already installed!'
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fi
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;;
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esac
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done
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}
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