Bulk account creation from text file

Question

I have the following script, it reads from users.txt the first and second fields and uses them to generate the username and password and creates the accounts for each line. the problem is that the script is only creating accounts for the first 2 lines and not for the rest

#!/bin/bash
FILE=/home/knoppix/users.txt
USERSH=/bin/bash


while IFS=":" read GECOS USRGRP ; do

groupadd -f $USRGRP



USERNM="u$(cat /dev/urandom| tr -dc '0-9' | fold -w 6| head -n 1)"
USERPW=$(cat /dev/urandom| tr -dc 'a-zA-Z0-9' | fold -w 6| head -n 1)


useradd $USERNM -p $USERPW -g $USRGRP -c "$GECOS,$USRGRP" -d $HOME/$USERNM -s $USERSH -m

ACCNT=$(grep $USRNM /etc/passwd)
echo "${tgrn}Account creation successful!${tr}"
echo "$ACCNT"
echo "Credentials"
echo "${tred}Username:${tr} $USERNM ${tred}Password:${tr} $USERPW"
echo
done < $FILE

Answer 1

#!/bin/bash

while IFS=: read GECOS USRGRP; do

    # your groupadd and useradd commands here

done < /home/knoppix/users.txt