SH -> restart rustdesk service and app after having selected a Network

rustdesk.sh

#!/bin/bash

  #---------------------------------------------------------------
  # -> filename : rustdesk.sh
  #	-> sudo chmod u+x rustdesk.sh
  #	-> Usage : ./rustdesk.sh
  #
  #  This tool implies, that you have set multiple RustDesk Servers. 
  #
  #  change : xxx.xxx.xxx.xxx by your first network
  #  change : zzz.zzz.zzz.zzz by your another network 
  #  change : MYPASSWORD by your local machine ROOT password
  #  change : xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx by the key belonging to this server
  #  change : zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz by the key belonging to this server
  #  change : MYUSERNAME by your local machine user name
  #----------------------------------------------------------------------------------------------------------------


    clear

    echo "┌────────────────────────────────────────────────────────────────────────────┐"
    echo "│ This app is used for RUSTDESK                                              │"
    echo "│ Purpose : restart rustdesk service and app after having selected a Network │"
    echo "└────────────────────────────────────────────────────────────────────────────┘"
    echo
    echo "┌─────────────────────────────────────┐"
    echo "│ Please, Select your Network below ! │"
    echo "│─────────────────────────────────────│"
    echo "│(0) - no server                      │"
    echo "│(1) - CLIENT 1 : xxx.xxx.xxx.xxx     │"
    echo "│(2) - CLIENT 2 : zzz.zzz.zzz.zzz     │"
    echo "│(*) - quit                           │"
    echo "└─────────────────────────────────────┘"



    #----------------------------------------------------------
    #this function replaces rustdeskfile and restarts rustdesk
    fnc_restart_rustdesk() {

        array=("$@")
        #---------------------------------
        # saving array to file
        #---------------------------------
        rm $rustdeskfile
        for element in "${array[@]}"
        do
          echo "$element" >> $rustdeskfile
        done

        echo $textdisplay

        #restart rustdesk service
        #trust zone only for clear password !!
        echo "MYPASSWORD" | sudo -S service rustdesk restart 2> /dev/null

        #stop rustdesk application
        echo "MYPASSWORD" | sudo -S killall rustdesk 2> /dev/null
        echo "RustDesk Service Restarted"
        echo
        nohup rustdesk &>/dev/null &
    }




    #----------------------------------------------------------
    #get the local IP Address
    mylocalip=$(hostname  -I | cut -f1 -d' ')

    #rustdeskconfig file
    rustdeskfile="/home/MYUSERNAME/.config/rustdesk/RustDesk2.toml"

    #asks the user to select his network
    read -p "Network : " rustdesknetwork



      #replace content of rustdeskconfig file using user's choice
      case $rustdesknetwork in


        #---------------------------------
        0) #user selected no server

            array=("")
                textdisplay="no server : Selected."
                fnc_restart_rustdesk "${array[@]}"
            ;;



        #---------------------------------
        1) #user selected xxx.xxx.xxx.xxx

            array=("rendezvous_server = 'xxx.xxx.xxx.xxx:21116'"
                  "nat_type = 1"
                  "serial = 0"
                  "[options]"
                  "allow-linux-headless = 'Y'"
                  "custom-rendezvous-server = 'xxx.xxx.xxx.xxx'"
                  "local-ip-addr = '$mylocalip'"
                  "direct-server = 'Y'"
                  "key = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'"
                  "verification-method = 'use-permanent-password'")
                  textdisplay="CLIENT 1 : xxx.xxx.xxx.xxx Selected."
                  fnc_restart_rustdesk "${array[@]}"
            ;;



        #---------------------------------
        2) #user selected zzz.zzz.zzz.zzz

            array=("rendezvous_server = 'zzz.zzz.zzz.zzz:21116'"
                  "nat_type = 1"
                  "serial = 0"
                  "[options]"
                  "allow-linux-headless = 'Y'"
                  "custom-rendezvous-server = 'zzz.zzz.zzz.zzz'"
                  "local-ip-addr = '$mylocalip'"
                  "direct-server = 'Y'"
                  "key = 'zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz'"
                  "verification-method = 'use-permanent-password'")
                  textdisplay="CLIENT 2 : zzz.zzz.zzz.zzz Selected."
                  fnc_restart_rustdesk "${array[@]}"
            ;;



        #---------------------------------
        *) #user selected any other choice

            echo "no choice: bye"
            ;;


      esac