count specific word in line in bash

Question

i have variable such as "1,2,3,4"

i want to count of commas in this text in bash

any idea ?

thanks for help

Answer 1

This will do what you want:

echo "1,2,3" | tr -cd ',' | wc -c

Answer 2

Off the top of my head using pure bash:

var="1,2,3,4"
temp=${var//[^,]/}
echo ${#temp}