How to include file in a bash shell script

Question

Is there a way to include another shell script in a shell script to be able to access its functions?

Like how in PHP you can use the include directive with

Answer 1

Syntax is source

ex. source config.sh

script - config.sh

USERNAME="satish"
EMAIL="satish@linuxconcept.com"

calling script -

#!/bin/bash
source config.sh
echo Welcome ${USERNAME}!
echo Your email is ${EMAIL}.

You can learn to include a bash script in another bash script here.