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100 lines
3.1 KiB
100 lines
3.1 KiB
#!/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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# Checks to see if we can use a command or not |
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check_exists() { |
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command -v "$1" >/dev/null |
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} |
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# This one installs utilities to your OS (If you need them!) |
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install_if_needed() { |
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for package in "$@" # $@ 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 check_exists |
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if [ -z $(check_exists $package) ]; 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 "check_exists" |
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if [ -z $(check_exists $package) ]; 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 "check_exists" |
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if [ -z $(check_exists $package) ]; 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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LEAD=1
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