Update hash-bash and echo statements to work under Linux

install

-#!/bin/sh
+#!/bin/bash
 
 set -e
 
@@ -77,8 +77,8 @@ ask() {
 # Prints out a link to the Better app on the App Store on premature exits.
 #
 exitPS(){
-	echo "PS. You can purchase and install Better from the App Store at:\nhttps://itunes.apple.com/us/app/better-by-ind.ie/id1080964978?mt=8\n"
-	echo "Laura, Osky, and I (Aral) appreciate your support! :)\nhttps://ind.ie/team\n"
+	echo -e "PS. You can purchase and install Better from the App Store at:\nhttps://itunes.apple.com/us/app/better-by-ind.ie/id1080964978?mt=8\n"
+	echo -e "Laura, Osky, and I (Aral) appreciate your support! :)\nhttps://ind.ie/team\n"
 }
 
 #
@@ -115,8 +115,8 @@ $prompt "
 		1 ) optionInstallEverything=true; humanNameOfThingToInstall="iOS App, etc.,"; break;;
 		2 ) optionInstallEverything=false; humanNameOfThingToInstall="Inspector"; break;;
 
-		$(( ${#options[@]}+1 )) ) echo "\nSee you later! :)\n"; exitPS; exit;;
-		*) echo "\nOops, I only understand numbers between 1 and 3.";continue;;
+		$(( ${#options[@]}+1 )) ) echo -e "\nSee you later! :)\n"; exitPS; exit;;
+		*) echo -e "\nOops, I only understand numbers between 1 and 3.";continue;;
 
 		esac
 
@@ -127,7 +127,7 @@ $prompt "
 	prompt="▶ "
 	options=("Use my forks." "Use canonical repositories.")
 
-	echo "$title"
+	echo -e "$title"
 PS3="
 $prompt "
 	select opt in "${options[@]}" "I have second thoughts about all this, get me out of here!"; do
@@ -137,8 +137,8 @@ $prompt "
 		1 ) optionFork=true; break;;
 		2 ) optionFork=false; break;;
 
-		$(( ${#options[@]}+1 )) ) echo "\nNo worries, we all get cold feet sometimes. Bye! :)\n"; exitPS; exit;;
-		*) echo "\nOops, I only understand numbers between 1 and 3.";continue;;
+		$(( ${#options[@]}+1 )) ) echo -e "\nNo worries, we all get cold feet sometimes. Bye! :)\n"; exitPS; exit;;
+		*) echo -e "\nOops, I only understand numbers between 1 and 3.";continue;;
 
 		esac
 
@@ -175,12 +175,12 @@ To continue:
 	#
 	# Summarise.
 	#
-	echo "\nThank you! :)\n\nI’m going to: \n"
+	echo -e "\nThank you! :)\n\nI’m going to: \n"
 
 	if [ $optionInstallEverything = true ]; then
-		echo "• Install everything (iOS App, Safari Extension, Inspector).\n"
+		echo -e "• Install everything (iOS App, Safari Extension, Inspector).\n"
 	else
-		echo "• Install only Better Inspector (and its dependencies).\n"
+		echo -e "• Install only Better Inspector (and its dependencies).\n"
 	fi
 
 	if [ $optionFork = true ]; then
@@ -188,7 +188,7 @@ To continue:
 		# Get the account name.
 		optionAccountName=$(accountName)
 
-		echo "• Use (and create, if necessary) your own forks on your\n  ${optionAccountName} GitLab account on source.ind.ie."
+		echo -e "• Use (and create, if necessary) your own forks on your\n  ${optionAccountName} GitLab account on source.ind.ie."
 	else
 		echo "• Using the canonical repositories (read-only unless you have commit access)."
 	fi
@@ -203,14 +203,14 @@ To continue:
 	# Confirm.
 	#
 	if ask "\nMay I proceed?" Y; then
-		echo "\nThank you, proceeding with the installation."
+		echo -e "\nThank you, proceeding with the installation."
 		if [ $optionInstallEverything = true ]; then
 			installEverything
 		else
 			installInspector
 		fi
 	else
-		echo "\nSure, no problem, maybe some other time. Bye! :)\n"
+		echo -e "\nSure, no problem, maybe some other time. Bye! :)\n"
 		exit
 	fi
 }
@@ -241,11 +241,11 @@ indentOutput(){
 
 installEverything(){
 	if [ $optionFork = true ]; then
-		echo "\nEnsuring forks exist:\n"
+		echo -e "\nEnsuring forks exist:\n"
 		ensureForksExistForEverything
 	fi
 
-	echo "\nInstalling everything:"
+	echo -e "\nInstalling everything:"
 
 	# 1. Install the Better iOS App (which will, in turn, install its dependencies, the Inspector and Builder)
 	install "app" "Better iOS App"
@@ -257,11 +257,11 @@ installEverything(){
 
 installInspector(){
 	if [ $optionFork = true ]; then
-		echo "\nForking inspector (and builder)…"
+		echo -e "\nForking inspector (and builder)…"
 		ensureForksExistForInspector
 	fi
 
-	echo "\nInstalling inspector."
+	echo -e "\nInstalling inspector."
 	install "inspector" "Better Inspector"
 }
 
@@ -275,14 +275,14 @@ install(){
 
 	# Check if a Better Builder installation exists.
 	if [ -d $componentToInstall ]; then
-		echo "\n  • Error: Existing ${humanName} found.\n\nPlease remove this if you want to reinstall it. You can uninstall existing Better components and data using the ./uninstall script.\n\nExiting.\n"
+		echo -e "\n  • Error: Existing ${humanName} found.\n\nPlease remove this if you want to reinstall it. You can uninstall existing Better components and data using the ./uninstall script.\n\nExiting.\n"
 		exit 1
 	fi
 
-	echo "\n  • Cloning ${humanName}…"
+	echo -e "\n  • Cloning ${humanName}…"
 	git clone --quiet git@source.ind.ie:${optionAccountName}/${componentToInstall}.git
 
-	echo "\n  • Running installation script for ${humanName}…"
+	echo -e "\n  • Running installation script for ${humanName}…"
 	cd $componentToInstall
 	indentOutput "./install" '        '
 	cd ..
@@ -295,7 +295,7 @@ install(){
 	fi
 
 	# OK
-	echo "\n  • ${humanName} installed."
+	echo -e "\n  • ${humanName} installed."
 }
 
 #