BASH script looking for some guidance

Question

well im in this for hours and I can't understand why I cant save the values to the variable:

let inicio=${tlinhas[0]}/2+1
tail -n +$inicio $1 | head -n $tlinhas | grep $2 | while read linha
do
    let palavras=$palavras+$(echo $linha | wc -w)
    echo $palavras 
done
printf "%d" $palavras

the problem is that every time I print the variable palavras its always zero but if I print it inside the while it has the value 14

 [leganuno@LegaNuno-PC FichasIndividuais]$ ./exercicio1.sh f1 Licenciatura
 7
 7
 0

It seems that your problem is the variable `palavra` scope. [This question](http://stackoverflow.com/questions/124167/bash-variable-scope) might help you. — talles, Mar 20 '13 at 01:35

score 0 · Answer 1 · answered Mar 20 '13 at 01:27

0

Try

palavras = echo $($palavras + $(echo $linha | wc -w) | bc)

answered Mar 20 '13 at 01:27

Lurk21

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BASH script looking for some guidance

1 Answers1