#!/bin/bash

fichier_a_lire=./Users.csv
fichier_a_ecrire=./logins.csv

rm $fichier_a_ecrire 2> /dev/null #redirection eror
touch $fichier_a_ecrire

while read ligne   
do
aecrire=""
last_name=$(echo $ligne | cut -d "," -f2)
first_name=$(echo $ligne | cut -d "," -f1)
group=$(echo $ligne | cut -d "," -f5)
login=$(echo $first_name | cut -c1)$last_name
login=$(echo $login | tr [:upper:] [:lower:])
login=$(echo $login | tr -dc [:alnum:])
password=$(echo $RANDOM | md5sum | head -c8)

aecrire="$login;$password;$first_name;$last_name;$group"

echo $aecrire >> $fichier_a_ecrire

done < $fichier_a_lire