Three methods to read file

Posted 2020-10-22

#! /bin/bash
cat /tmp/passwd | while read line
do
echo "$line"
done
echo "========================================="
exec < /tmp/passwd
while read line;do
echo "$line"
done
echo "============================================"

while read line;do
echo "$line"
done</tmp/passwd

echo "++++++++++++++++++++++++++++"