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jaguaro
.consigliere.

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 sommare con la shell di minix una lista di numeri

non mi è molto chiaro come fare...
ho fatto un po' di prove con expr, variabili e file ma non sono giunto ad una soluzione..

es.

file numbers
1
43
6
3
87
3
8
5
9


se voglio sommarli?

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Carlo Boni
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Sinistra Universitaria
23-07-2008 15:55
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Gehur
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http://www.dsy.it/forum/showthread....5&pagenumber=22

solo che se stampo sum mi visualizza:

esempio fatto con sum=0 e tmp=1234

0+1
0+2
0+3
0+4

e non mi fa la somma

Last edited by Gehur on 23-07-2008 at 19:28
23-07-2008 19:19
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Gehur
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ecco..

Attachment: img.jpg
This has been downloaded 25 time(s).
23-07-2008 19:37
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ideafix
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ho avuto lo steso problema è solo un problema di spazii!!!

se invece di

S=$(expr $S+$N)

scrivi

S=$(expr $S + $N) funziona :|
23-07-2008 20:22
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Gehur
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ok grazie
23-07-2008 20:34
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jaguaro
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Grazie mille davvero!
non avevo pensato al cat nel in del for!

la riassumo qua per velocità di lettura dei posteri:

code:

#!/bin/sh
sum=0
for tmp in $(cat numbers);
do
   sum=$(expr $sum + $tmp);
   echo $sum;
done

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Carlo Boni
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23-07-2008 21:48
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