Basic custom commands for terminal. Altho, it's Open Source here on Github, i guess it's more for personal use only.
Script 1) echo_input_script.sh
> source echo_input_script.sh
> echo_input -h
> echo_input arg1 arg2
Script 2) echo_input_script_with_option.sh
> source echo_input_script_with_option.sh
> echo_input -h
> echo_input -a saksham
> echo_input invalid format
Note: Just source Shell Script files in ~/.bashrc
and use it anywhere and anytime.