Satisfied shellcheck, early check for dependencies to simplify.

install.sh

@@ -1,78 +1,87 @@
 #!/bin/bash
 
+set -e
+
+# Ensuring we have all the tools we require
+
+missing=""
+for tool in git curl apt wget make
+do
+	if command -v "$tool" > /dev/null ; then
+		missing="$missing $tool"
+	fi
+done
+if [ -n "$missing" ]; then
+	echo "E: This script lacks the following tool(s) to be executed successfully: $missing"
+	echo "I: To update your current installation and install all build deps run"
+	echo "   sudo apt update
+	echo "   sudo apt upgrade -y
+	echo "   sudo apt install -y git curl wget make"
+	exit 1
+fi
+
+# Loading helping routines
+
 source lib/source
+
+# Main
+
 RED="\e[0;31m"
 GRN="\e[0;32m"
 PNK="\e[0;35m"
 TXT="\033[0m"
 YLW="\e[0;33m"
 FIN="\e[0m"
-GIT_BRANCH=`git branch`
 
-echo ""
+GIT_BRANCH=$(git branch)
+
+echo
 echo -en "${TXT}Raspberry Pi Image Builder:${FIN}"
 echo -e " ${PNK}[${FIN}${GRN}${GIT_BRANCH}${FIN}${PNK}]${FIN}"
 
-if [[ `command -v curl` ]]; then
-	:;
-else
-	echo ""
-	echo -e "Missing dependency: curl"
-	sudo apt install -y curl wget
-fi
 echo -en "${TXT}Checking Internet Connection:${FIN} "
-if [[ `curl -I https://github.com 2>&1 | grep 'HTTP/2 200'` ]]; then
+if curl -I https://github.com 2>&1 | grep -q 'HTTP/2 200' ; then
 	echo -en "${PNK}[${FIN}${GRN}OK${FIN}${PNK}]${FIN}"
-	echo ""
+	echo
 else
 	echo -en "${PNK}[${FIN}${RED}failed${FIN}${PNK}]${FIN}"
-	echo ""
+	echo
 	echo -e "${TXT}Please check your internet connection and try again${FIN}."
-	exit 0
+	exit 1
 fi
 echo -en "${TXT}Checking Host Machine:${FIN} "
 sleep .50
 if [[ "$HOST_CODENAME" == "jammy" ]]; then
 	echo -en "${PNK}[${FIN}${GRN}Ubuntu Jammy Jellyfish${FIN}${PNK}]${FIN}"
-	echo ""
+	echo
 else
 	if [[ "$HOST_CODENAME" == "bullseye" ]]; then
 		echo -en "${PNK}[${FIN}${GRN}Debian Bullseye${FIN}${PNK}]${FIN}"
-		echo ""
+		echo
 	else
 		if [[ "$HOST_CODENAME" == "bookworm" ]]; then
 			echo -en "${PNK}[${FIN}${GRN}Debian Bookworm${FIN}${PNK}]${FIN}"
-			echo ""
+			echo
 		else
 			echo -ne "${PNK}[${FIN}${RED}failed${FIN}${PNK}]${FIN}"
-			echo ""
+			echo
 			echo -e "${TXT}The OS you are running is not supported${FIN}."
-			exit 0
+			exit 1
 		fi
 	fi
 fi
-echo ""
+echo
 if [[ "$HOST_ARCH" == "x86_64" || "$HOST_ARCH" == "aarch64" ]]; then
 	:;
 else
 	echo -e "ARCH: $HOST_ARCH is not supported by this script."
-	exit 0
+	exit 1
 fi
 
 if [[ "$HOST_ARCH" == "x86_64" ]]; then
 	echo -e "${TXT}Starting install ...${FIN}"
 	sleep .50
-	if [[ `command -v make` ]]; then
-		sudo apt update
-		sudo apt upgrade -y
-		make ccompile
-	else
-		sleep 1s
-		sudo apt update
-		sudo apt upgrade -y
-		sudo apt install -y make
-		make ccompile
-	fi
+	make ccompile
 fi
 
 if [[ "$HOST_ARCH" == "aarch64" ]]; then
@@ -83,41 +92,11 @@ if [[ "$HOST_ARCH" == "aarch64" ]]; then
 	do
 		case $opt in
 			"Cross Compiling")
-			if [[ `command -v make` ]]; then
-				echo ""
-				echo -e "${TXT}Starting install ...${FIN}"
-				sleep 1s
-				sudo apt update
-				sudo apt upgrade -y
 				make ccompile64
-			else
-				echo ""
-				echo -e "${TXT}Starting install ...${FIN}"
-				sleep 1s
-				sudo apt update
-				sudo apt upgrade -y
-				sudo apt install -y make
-				make ccompile64
-			fi
 				break
 				;;
 			"Native Compiling")
-			if [[ `command -v make` ]]; then
-				echo ""
-				echo -e "${TXT}Starting install ...${FIN}"
-				sleep 1s
-				sudo apt update
-				sudo apt upgrade -y
-				make ncompile
-			else
-				echo ""
-				echo -e "${TXT}Starting install ...${FIN}"
-				sleep 1s
-				sudo apt update
-				sudo apt upgrade -y
-				sudo apt install -y make
 				make ncompile
-			fi
 				break
 				;;
 			"Quit")