$ cat random.txt
1 foo
2 bar
3 foobar

4 barfoo


$ while [ 1 ] ; do  ./foo.sh ; done
bar
foo
foo
3
3
2
1
1
bar
bar
foo
foo
3
foo
2
3
1
2
bar
1
bar
bar
foo
2
3
1
foo
bar
3