====== SED - Convert - Convert space with newline ======
There are a few ways to achieve that:
1. sed
echo "one two three" | sed 's/ /\n/g'
one
two
three
2. awk
echo "one two three" | awk '$1=$1' RS= OFS="\n"
one
two
three
3. tr
$ echo "one two three" | tr -s ' ' '\n'
one
two
three