Bash based Operating system

long time reader, 1st time asking a question...

So I've been trying to "build a basic bash based OS" (for lack of a better term), using only built in bash commands

So far I have 2 scripts that I've managed to put together, 1 provides network info, the other provides basic system information:

NETWORK SCRIPT:

    #!/bin/bash
    watch -t -n 1 "echo 'NETWORK:' && date &&
    echo 'Hostname: $(uname -n)'
    echo 'Host I.P : $(ip r | grep src | awk '{print $9}')'
    echo 'Uptime: $(uptime)'
    echo 'Users: $(users)'
    echo
    echo 'ROUTER:'
    echo 'I.P: $(ip r| grep 'default'| awk '{print $3}')'
    echo 'MAC: $(iwconfig | grep Access | awk '{print $6}')'
    echo 'ESSID: $(iwgetid -r)' 
    echo 'Public I.P: $(wget -qO- https://ipecho.net/plain)'
    "

Here is the SYSTEM script:

    #!/bin/bash
    watch -t -n 1 "
    echo 'SYSTEM:'
    date 
    uptime -s
    uptime -p
    echo '\\t\t\t\t PROCESSES:'
    ps aux | head -n7
    echo '\\t\t\t\t CPU:'
    lscpu | grep Hz
    echo
    echo '\\t\t\t\t RAM:'
    free -m -h
    echo
    echo '\\t\t\t\t STORAGE:'
    lsblk -l | grep sd
    echo
    "

With these, I'm using the watch command so that the output refreshes itself every second, but I was wanting to know if it was possible for me to add a "press Q to quit" option in there anywhere?..

The Idea is that I could have a "main menu" where I could select an option, and have it open up, preferably in the same window but no drama if I can't...

I also have another script that I can run, that will allow me to have both of these scripts open in their own window:

    #!/bin/bash
    # run v1.0.0.0
    # Automates loading:
    # SYSTEM INFORMATION:
    gnome-terminal -- sh -c "bash -c \"!!; exec bash system.sh \""
    # NETWORK INFORMATION:
    gnome-terminal -- sh -c "bash -c \"!!; exec bash network.sh \""

Keep in mind (as you can all probably tell),I'm still very new to this whole bash thing, so I would love to learn some wisdom from the gods.

Currently using Ubuntu 20.04

Any replies greatly appreciated