bfetch

#!/usr/bin/env bash
#
# Yet another fetch script in bash
#
# Author: Justus0405
# Date: 11.07.2024
# License: MIT

export scriptVersion="1.2"

### COLOR CODES ###
export black="\e[1;30m"
export red="\e[1;31m"
export green="\e[1;32m"
export yellow="\e[1;33m"
export blue="\e[1;34m"
export purple="\e[1;35m"
export cyan="\e[1;36m"
export lightGray="\e[1;37m"
export gray="\e[1;90m"
export lightRed="\e[1;91m"
export lightGreen="\e[1;92m"
export lightYellow="\e[1;93m"
export lightBlue="\e[1;94m"
export lightPurple="\e[1;95m"
export lightCyan="\e[1;96m"
export white="\e[1;97m"
export bold="\e[1m"
export faint="\e[2m"
export italic="\e[3m"
export underlined="\e[4m"
export blinking="\e[5m"
export reset="\e[0m"

### FUNCTIONS ###
getArguments() {
	case "$1" in
	"-s" | "--system")
		printSystem
		;;
	"-t" | "--temps")
		printTemperatures
		;;
	"-h" | "--help")
		printHelp
		;;
	"-v" | "--version")
		printVersion
		;;
	"")
		printSystem
		;;
	*)
		echo -e "Error: Unrecognized option '$1'. Use $(basename "$0") help"
		exit 1
		;;
	esac
}

### System Handling ###
printSystem() {

	### General System Info ###
	showUser=$(whoami)
	showHostname=$(cat /etc/hostname)
	showKernel=$(uname -r)
	showUptime=$(uptime -p | sed 's/up //')

	# Reads the age of the file machine-id to determine the OS age
	if [[ -f "/etc/machine-id" ]]; then
		showAge=$((($(date +%s) - $(date -r "/etc/machine-id" +%s)) / 86400))
	else
		showAge="Error: File not found"
	fi

	### Usage Info ###
	# Show ram usage in mb, cut everything except line 2, calculate used percentage
	showRamUsage=$(free -m | awk 'NR==2{used=$3; total=$2; printf "%dmb / %dmb (%.0f%%)", used, total, used/total*100}')

	# Show total disk usage in gb, only use line total , print values
	showDiskUsage=$(df -h --total | awk '/total/ {printf "%s / %s (%s)", $3, $2, $5}')

	### Network Info ###
	# Tries to ping google dns server, if successful return Online, if not return Offline
	showOnlineStatus=$(if ping -c 1 8.8.8.8 &>/dev/null; then echo -e "${green}Online${reset}"; else echo -e "${red}Offline${reset}"; fi)

	# Show every IPv4 adress, filter only for the numbers, remove loopback adress, show remaining adress
	showLocalIp=$(ip -4 addr show | grep -oP '(?<=inet\s)\d+(\.\d+){3}' | grep -v '127.0.0.1' | head -n 1)

	echo -e ""
	echo -e "\t╭─────────────╮"
	echo -e "\t│ 󰀄  ${red}User${reset}     │ ${showUser}"
	echo -e "\t│ 󰌽  ${yellow}Kernel${reset}   │ ${showKernel}"
	echo -e "\t│ 󰥔  ${green}Uptime${reset}   │ ${showUptime}"
	echo -e "\t│ 󰃭  ${cyan}Age${reset}      │ ${showAge} days"
	echo -e "\t│ 󰘚  ${blue}Ram${reset}      │ ${showRamUsage}"
	echo -e "\t│ 󰋊  ${purple}Disk${reset}     │ ${showDiskUsage}"
	echo -e "\t├─────────────┤"
	echo -e "\t│ 󱄙  ${red}Hostname${reset} │ ${showHostname}"
	echo -e "\t│ 󰖩  ${yellow}Internet${reset} │ ${showOnlineStatus}"
	echo -e "\t│ 󰈀  ${green}Local IP${reset} │ ${showLocalIp}"
	echo -e "\t├─────────────┤"
	echo -e "\t│ 󰏘  colors   │ ${white} ${red} ${yellow} ${green} ${cyan} ${blue} ${purple} ${black} ${reset}"
	echo -e "\t╰─────────────╯"
	echo -e ""
}

### Temperature Handling ###
findTempPath() {
	local potentialPaths=("$@")
	for path in "${potentialPaths[@]}"; do
		if [ -f "${path}" ] && [ -s "${path}" ]; then
			echo "${path}"
			return 0
		fi
	done
	echo ""
}

printTemperatures() {
	echo -e ""
	echo -e "\t> Temperatures"
	potentialPathsZone0=(
		"/sys/class/thermal/thermal_zone0/temp"
		"/sys/class/hwmon/hwmon0/temp1_input"
		"/sys/class/hwmon/hwmon1/temp1_input"
	)
	potentialPathsZone1=(
		"/sys/class/thermal/thermal_zone1/temp"
		"/sys/class/hwmon/hwmon0/temp2_input"
		"/sys/class/hwmon/hwmon1/temp2_input"
	)

	thermalZone0Path=$(findTempPath "${potentialPathsZone0[@]}")
	thermalZone1Path=$(findTempPath "${potentialPathsZone1[@]}")

	if [[ -n "${thermalZone0Path}" ]]; then
		temp0=$(cat "${thermalZone0Path}" 2>/dev/null)
		if [[ ${temp0} =~ ^[0-9]+$ ]]; then
			thermalZone0=$(cat /sys/class/thermal/thermal_zone0/type 2>/dev/null || echo "Zone 0")
			thermalZone0Temp=$((temp0 / 1000))
			echo -e "\t${red}${thermalZone0}${reset}: ${cyan}${thermalZone0Temp}°C${reset}"
		fi
	fi

	if [[ -n "${thermalZone1Path}" ]]; then
		temp1=$(cat "${thermalZone1Path}" 2>/dev/null)
		if [[ ${temp1} =~ ^[0-9]+$ ]]; then
			thermalZone1=$(cat /sys/class/thermal/thermal_zone1/type 2>/dev/null || echo "Zone 1")
			thermalZone1Temp=$((temp1 / 1000))
			echo -e "\t${red}${thermalZone1}${reset}: ${cyan}${thermalZone1Temp}°C${reset}"
		fi
	fi

	if [[ -z "${thermalZone0Path}" ]] && [[ -z "${thermalZone1Path}" ]]; then
		echo -e "\t${red}ERROR:${reset} No valid temperature sensor found"
		exit 1
	fi

	echo -e ""
}

printHelp() {
	echo -e "usage: $(basename "$0") [...]"
	echo -e "arguments:"
	echo -e "\t -s | --system"
	echo -e "\t -t | --temps"
	echo -e "\t -h | --help"
	echo -e "\t -v | --version"
	echo -e ""
	exit 0
}

printVersion() {
	echo -e "               $(basename "$0") v${scriptVersion} - GNU bash, version 5.3"
	echo -e "               Copyright (C) 2025-present Justus0405"
	echo -e ""
	exit 0
}

### PROGRAM START ###
getArguments "$@"