Awk/Unix group by

Question

have this text file:

name, age
joe,42
jim,20
bob,15
mike,24
mike,15
mike,54
bob,21

Trying to get this (count):

joe 1
jim 1
         


        

Answer 1

cat file.txt | cut -d',' -f 1 | sort | uniq -c

2 bob
1 jim
1 joe
3 mike