Split a word into characters - Unix

Question

If I have a word called "orange," how to divide it into separate characters.

My conclusion should be:

o r a n g e 

Answer 1

 echo orange | fold -w 1 

Output

 o r a n g e 

Answer 2

Here is a solution with grep :

echo "orange" | grep -o .

Answer 3

Here is a solution using sed:

 echo orange | sed 's/./&\n/g' 

Answer 4

A pure bash solution (faster than calling external tools on short lines):

 $ a="orange" $ [[ $a =~ ${a//?/(.)} ]] && printf '%s\n' "${BASH_REMATCH[@]:1}" o r a n g e