yesno

[root@C900000 foo]# cat script
yesno "1"
yesno "2"
yesno "3"
yesno "4"
[root@C900000 foo]# cat reply
n
n
n
n

[root@C900000 foo]# cat reply | bash script
1 [y, n ] 2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
2 [y, n ]        Type  y  for yes,  n  for no.
...
...
...
forever more