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up vote 1 down vote favorite

This is my code:

while IFS=',' read a b c; do
     read input
     echo $input
done 3<&0 < input.csv > output.txt

I took care of input redirection by redirecting through pipeline. But still,when I run the above code, control does not stop for input.

Why?

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1 Answer 1

up vote 3 down vote

It's because your input stream is feeding both read. You're almost right, so maybe it's a typo (you just forgot to give to right FD to your second read) :

while IFS=',' read a b c; do
  read input <&3
  echo $input
done 3<&0 < input.csv >> output.txt
share|improve this answer
    
yeah I missed that, thanks again. I can read input from while loop now, however when I try the same inside a function called in while loop, it does not work. –  Menon Apr 7 at 14:38
1  
@Menon Why? You just have to replace your read input <&3 by my_function <&3 and it should work. –  apaul Apr 7 at 14:57

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