How to read a file line by line in Bash.
#!/bin/bash
file=test.txt
while IFS= read -r line; do
echo $line
done < $file
Contents of test.txt.
one
two
three
Results when running test.sh.
$ bash test.sh
one
two
three
To read multiple strings line by line.
#!/bin/bash
file=test.txt
while read -r a b; do
echo $b
done < $file
Modified contents of test.txt.
one 1
two 2
three 3
New results.
$ bash test.sh
1
2
3