bash split lines code example

Example 1: split bash string

IN="[email protected];[email protected]"
arrIN=(${IN//;/ })

Example 2: separate words in lines bash

Just use tr command for separating words output into separate lines:
tr -s '[[:punct:][:space:]]' '\n'
Example for
cat file.txt | tr -s '[[:punct:][:space:]]' '\n'