Terminal CMD To Save Commands And List Them [ VERY HELPFUL ]

#!/bin/bash
# ImPerial TeK Solutions (ITS)
# Copyright (c) 2018 v1ral <ImPerialTeKSolutions@outlook.com>
##########################################
    # Console colors             #
    white='\033[0m'   # white (norm) #
    red='\033[31m'    # red          #
    green='\033[32m'  # green        #
    orange='\033[33m' # orange       #
    blue='\033[34m'   # blue         #
    purple='\033[35m' # purple       #
    cyan='\033[36m'   # cyan         #
    gray='\033[37m'   # gray         #
##########################################
S='sudo'
# ELEVATED PRIVLEGES
P='apt-get -y install'
# AUTOMATIC ANSWER YES, INSTALLING ANY GIVEN APT PACKAGE
PP='python-pip'
# NEEDED PACKAGE BEFORE INSTALLING KEEP
K='keep'
# AWESOME PIP PACKAGE FOR SAVING TERMINAL COMMANDS
PI='pip install'
# FOR INSTALLING THE PIP KEEP PACKAGE
#########
# START #
#########
echo -e $red"Options: $orange \n1) Do You Have 'python-pip' Already Installed? \nIf You Are Not Sure Answer No \nWe Will Check $blue \n2) Answer=NO $gray \n3) Yes I Already Have 'python-pip' Installed \nPlease Now Install 'keep' For Me "

read n
case $n in
    1) $S $P $PP; $S $PI $K; echo "Please Wait.....";;
    2) $S $P $PP; $S $PI $K; "Please Wait.....";;
    3) $S $PI $K; "Please Wait.....";;
esac
echo -e $green"Congratulations!!! \nAll Done!!! $gray \nv1ral <ImPerialTeKSolutions@outlook.com> $orange \nBash Shell Scripts Made For You, Custom Made Scripts.... \nMake Your Daily Tasks Easier!!!! $blue \nEMAIL Us Today, We Can Help!!! "

echo -e $gray"OPTIONS: \n1) Send Us Feedback \nOr Inquire About A Script Made For You! \n2) No Thanks, Im Done! "

read nn
case $nn in
    1) read -p "Hit [E]nter & Copy Email, Hit [E]nter After To Bring Up Your Browser"; read -p "ImPerialTeKSolutions@outlook.com"; sleep 3; x-www-browser www.gmail.com;;
    2) echo "$orange If You Ever Change Your Mind \nPlease Feel Free To Email Us Anytime @ \nImPerialTeKSolutions@outlook.com, THANKS! "
esac