#!/bin/sh

while IFS=, read name sex birthday blood_type
do
 echo $name
 echo $sex
 echo $birthday
 echo $blood_type
 echo ''
done < list.txt

read line <list.txt
echo $line
echo "----------"
while read line
do
 echo $line
done <list.txt
echo "----------"


=======================================
$ cat list.txt
taro,male,1980-05-06,O
hanako,female,1982-03-14,A
hiroshi,male,1981-06-17,AB
emi,female,1982-12-03,B

=====================================
kondo@kondo-PC ~/shell
$ source read.sh
taro
male
1980-05-06
O

hanako
female
1982-03-14
A

hiroshi
male
1981-06-17
AB

emi
female
1982-12-03
B






taro,male,1980-05-06,O
----------
taro,male,1980-05-06,O
hanako,female,1982-03-14,A
hiroshi,male,1981-06-17,AB
emi,female,1982-12-03,B

----------