Reading Yes/No Option inside the loop, Does not work

Question

while read line
do

read -p "Are you alright? (y/n) " RESP
if [ "$RESP" = "y" ]; then
  echo "Here i want to do something, but prompt does not wait for the answer"
else
  echo "You need more bash programming"
fi

done < find-spam-send-php-ver2.log

==> This script does not work. It does not "wait" for the yes or not option. Please I want this script to work. Please let me know, how do modify this. I have seen this kind of similar things in many linux installation scripts.

Have you noticed that you have redirected the standard input from a file text? Any `read` to the standard input will get data from the file text! — Jdamian, Dec 04 '14 at 07:27

score 1 · Accepted Answer · answered Dec 04 '14 at 07:34

1

I have not tested this but should work,

while read line <&3
do

read -p "Are you alright? (y/n):" RESP

if [ "$RESP" = "y" ]; then
  echo "Here i want to do something, but prompt does not wait for the answer"
else
  echo "You need more bash programming"
fi

done 3< find-spam-send-php-ver2.log

answered Dec 04 '14 at 07:34

Nachiket Kate

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Excuse me, but why does it work? I think `&3` is some sort of custom redirector, but I am not very experienced with this matter. And another question: case of nested while loops, could we define `&3` and `&4` in order to use each one with one of the loops? – Sopalajo de Arrierez Dec 08 '14 at 00:45
And please another one: is this `&3` the `file descriptor` thing you talked in your comment? Thanks you. – Sopalajo de Arrierez Dec 08 '14 at 00:46
Yes &3 is file descriptor. Please go through unix file descriptors in shell readings on Google. Explaining here will end up in long chat series. Apologies for inconvenience. – Nachiket Kate Dec 08 '14 at 05:23

Reading Yes/No Option inside the loop, Does not work

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