Hello
ennuient mais??
#/bin/bash
TOT=21765
let NUM=$TOT/1000
(( NUU=$TOT/1000))
echo "$TOT $NUM $NUU"
le resulta est 21
Merci d'avance
division par 1000 en bash
Oct 06, 2021
11 Replies
Bash use ONLY INTEGER numbers!
Read man bash!
TOT=21765 NUM=`echo $TOT / 1000 |bc -l` echo "$TOT $NUM"
But don't be fooled, $NUM is a string, not a floating point number
Yes. You can install 'bc' to do more math in scripts, for example:
R=$(echo 'scale=3;21765/1000' | bc -l) echo $R
One drawback: it has no rounding, only truncation, so you'd have to improvise with +0.5 or use printf.
In Javascript and many other languages, there is no difference.
Truth welcomes investigation because truth knows investigation will lead
to converts. It is deception that uses all the other techniques.
Irrelevant. The topic of this conversation is Bash, not javascript nor "many other languages".
Your digression seems meant only to confuse the issue under discussion.
Lew Pitcher
"In Skills, We Trust"
Also it?s wrong. Strings and numbers are distinct types in JS.
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Voltaire.
Va donc voir sur fr.comp.sys.raspberry-pi
Jean-Pierre Kuypers
They are typed, but it's weak rather than strong, and has automatic promotion
str = "1.570795"; num = 1.570795; res = 2 * str; alert([typeof(str), typeof(num), res, typeof(res)]);
A. Dumas:
Or you can keep truncation, but set up one extra digit of precision...
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How does that help?
echo 'scale=4;1/3*3' | bc -l
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