youcanthankuslater - for single machine

#!/bin/bash
sudo apt-get install boxes
echo ""
echo -e "\n\t***\n\tYOUCANTHANKUSLATER\n\t***\n\tMade by:\n\tARFAH UPADE and SHWETA PAI" | boxes -d spring -a c
label() {
echo ""
echo -e  "Hello.\nWhat would you like to do today?\n1. File Transferring\n2. Terminal Sharing\n3. Send Message/Chat\n"
echo -e "Please enter 1 or 2 or 3\n"
read a

if [ "$a" == "1" ]
then
echo -e "Select mode of transfer"
echo -e "1. Transfer file to another machine\n2. Recieve file from another machine"
echo -e "Please enter 1 or 2\n"
read choice
if [ "$choice" == "1" ];
then
   echo -e "How many files do you want to transfer?\n1. A Single File\n2. A Directory"
echo -e "Please enter 1 or 2\n"
read number

if [ "$number" == "1" ];
then
   echo -e "Enter location of file, example: Desktop\n"
read location
cd $location
ls
echo ""
read -p "Name of file to be transferred : " filename
read -p "Enter Username of recieving user : " username
read -p "Enter the IP Address of the recieving user : " ip
read -p "Destination path : " dest

scp $filename $username@$ip:$dest
cd
echo ""
echo -e "\e[7mProcedure Completed!\e[0m"
else
   read -p "Enter the directory location, example Desktop: " dirname
echo ""
cd $dirname
ls
echo ""
read -p "Name of directory whose files are to be transferred : " filename
read -p "Enter Username of recieving user : " username
read -p "Enter the IP Address of the recieving user : " ip
read -p "Destination path : " dest

scp -r $filename $username@$ip:$dest
cd
echo ""
echo -e "\e[7mProcedure Completed!\e[0m"
fi
else
#user1=$(whoami)
echo ""
echo -e "NOTE: Only a \e[5mSingle File\e[0m can be recieved."
echo ""
read -p "Enter Sender's Username : " sendun
read -p "Enter Sender's IP Address : " sendip
read -p "Enter location of file : " sendloco
#cd $sendloco
#ls
read -p "Filename  : " sendfile
read -p "Destination path : " dest

scp $sendun@$sendip:$sendloco/$sendfile $dest
#echo -e "Enter the password again\n"
#PLEASE FIND A WAY TO AVOID ASKING PASSWORD TWICE!
#ssh -t $sendun@$sendip  'export DISPLAY=:0 
#notify-send "ATTENTION : File Transferred" "'$user1' recieved '$sendfile' in '$sendloco' from your machine"'
echo ""
echo -e "\e[7mProcedure Completed!\e[0m"
echo ""
echo "Contents of "$dest" are now:"
echo ""
ls $dest
fi
fi
if [ "$a" == "2" ];
then
#sudo apt-get install screen
#sudo apt-get install ssh libnotify-bin
# The above needs to be installed on both machines for this code to work!
# NOTE: If export-notify-send doesn't work, use what you have used for Send Messages

read -p "Enter username of other user: " usern
read -p "Enter IP of other user: " IPaddress
read -p "Give session name : " sessname
echo ""
echo -e "\e[1m(Note: If system doesn't ask password after some duration, check IP Address to make sure it's correct)\e[0m"
echo ""
#cat command.sh | 
ssh -t $usern@$IPaddress  'export DISPLAY=:0 
notify-send "PLEASE TYPE:" "screen -x '$sessname'" && screen -S '$sessname'' 
#<<'EOSSH'
#<< EOF 
#EOSSH
#EOF
fi
if [ "$a" == "3" ];
then
echo -e "Please select :\n1. Send Message\n2. Chat \n " 
read selection
if [ "$selection" == "1" ];
then
echo ""
echo -e "Is the recipient logged in to :\n1. This machine\n2. Another machine\n"
echo -e "Please enter 1 or 2\n"
read log
if [ "$log" == "1" ];
then
curruser=$(whoami)
w
echo ""
read -p "Enter ONLY DIGIT under TTY column of recepient : " digit
read -p "Your message : " message
sudo echo "" > /dev/pts/$digit
sudo echo "******YOU HAVE A MESSAGE FROM $curruser********" > /dev/pts/$digit
sudo echo "" > /dev/pts/$digit
sudo echo $message > /dev/pts/$digit
sudo echo "" > /dev/pts/$digit
sudo echo -e "\e[1mWant to reply? Use command 'youcanthankuslater'\e[0m" > /dev/pts/$digit
sudo echo "" > /dev/pts/$digit
sudo echo "**********************************************" > /dev/pts/$digit
echo ""
echo -e "\e[7mProcedure Completed!\e[0m"
echo ""
else
curruser=$(whoami)
read -p "Enter username of other user: " un
read -p "Enter IP of other user: " IPadd
ssh -t $un@$IPadd bash -c '
w
echo ""
read -p "Enter ONLY DIGIT under TTY column of recepient : " digit
read -p "Your message : " message
sudo echo "" > /dev/pts/$digit
sudo echo "******YOU HAVE A MESSAGE FROM '$curruser'********" > /dev/pts/$digit
sudo echo "" > /dev/pts/$digit
sudo echo $message > /dev/pts/$digit
sudo echo "" > /dev/pts/$digit
sudo echo -e "\e[1mWant to reply? Use command 'youcanthankuslater'\e[0m" > /dev/pts/$digit
sudo echo "" > /dev/pts/$digit
sudo echo "**********************************************" > /dev/pts/$digit
echo ""
echo -e "\e[7mProcedure Completed!\e[0m"
echo "" '
fi
else
#sudo apt-get install talk
echo "Weclome to chat!"
echo ""
read -p "Enter username of other user: " un
read -p "Enter IP of other user: " IPadd
username=$(whoami)
ssh $un@$IPadd 'export DISPLAY=:0 
notify-send "PLEASE TYPE:" "talk '$username'@<Ip Address>"';
talk $un@$IPadd;
echo -e "Retry? 1. Yes or 2. No :\n "
read  answer
if [ "$answer" == "1" ];
then
talk $un@$IPadd
fi
fi
fi
}
label
echo ""
echo -e "Do you want to continue?\n1. Yes\n2. No\nPlease enter 1 or 2\n"
read cont
if [ "$cont" == "1" ];
then
label
user=$(whoami)
echo -e "\n\tBye "$user"\n\t***\n\tYOUCANTHANKUSLATER\n\t***\n\tMade by:\n\tARFAH UPADE and SHWETA PAI" | boxes -d capgirl -a c
else
user=$(whoami)
echo -e "\n\tBye "$user"\n\t***\n\tYOUCANTHANKUSLATER\n\t***\n\tMade by:\n\tARFAH UPADE and SHWETA PAI" | boxes -d capgirl -a c
fi