Add install.sh script (with initial functions)

install.sh

@@ -0,0 +1,75 @@
+#!/bin/sh
+
+checkUefi() {
+    ls /sys/firmware/efi/efivars > /dev/null 2>&1
+    if [ $? -ge 1 ]; then
+        echo "This scripts supports only UEFI boot mode."
+        exit 1
+    fi
+}
+
+updateSystemClock() {
+    timedatectl set-ntp true
+}
+
+showDisks() {
+    items=$(lsblk -d -p -n -l -o NAME,SIZE -e 7,11)
+    options=()
+
+    IFS_ORIG=$IFS
+    IFS=$'\n'
+    for item in ${items}; do  
+        options+=("${item}" "")
+    done
+	IFS=$IFS_ORIG
+    
+    result=$(whiptail --title "Select a disk" --menu "" 0 0 0 "${options[@]}" 3>&1 1>&2 2>&3)
+    disk=$result
+}
+
+partDisks() {
+    showDisks
+
+    result=$(whiptail --yesno "Do you want me to automatically partition and format the disk for you?" 0 0)
+    if [ $result -eq 1 ]; then
+        gdisk $disk
+        return
+    fi
+
+    autoPart
+    bootPart=${disk}1
+    swapPart=${disk}2
+    rootPart=${disk}3
+
+    formatPart
+    mountPart
+}
+
+autoPart() {
+    # Create new GPT disklabel
+    parted $disk mklabel gpt
+
+	sgdisk $disk -n=1:0:+300M -t=1:ef00
+	sgdisk $disk -n=2:0:+1024M -t=2:8200
+	sgdisk $disk -n=3:0:0
+}
+
+formatPart() {
+    mkfs.fat -F 32 "$bootPart"
+    mkswap "$swapPart"
+    mkfs.ext4 "$rootPart"
+}
+
+mountPart() {
+    mount "$rootPart" /mnt
+    mkdir -p /mnt/boot/efi
+    mount "$bootPart" /mnt/boot/efi
+    swapon "$swapPart" 
+}
+
+runScript() {
+    whiptail --title "CocoASAIS" --msgbox "Welcome to CocoASAIS!" 0 0
+    checkUefi
+    updateSystemClock
+    partDisks
+}