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fibonacci.sh
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#!/bin/bash #set -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games" function is_int { if grep -E -v -q "^-?[0-9]+$" <<< $1; then return 1 fi return 0 } if [ -z $1 ] || ! is_int $1 || (($1 <= 0)); then printf "\ Usage: %s nbr_int nbr_int: Un nombre entier supérieur à 0 " $0 exit 1 fi a=0 b=1 while (($b < $1)); do printf "%d " $b ((b=a+b)) ((a=b-a)) done printf "b/a = %1.15f " $(echo $b/$a | bc -l) exit 0 |