Write a script to automate the creation of new users and groups, i have this so far but the groups isnt working. I NEED HELP MAKING THIS WORK. HERE IS MY SCRIPT. #!/bin/bash​ ​

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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IF YOU DONT KNOW HOW TO BASH SCRIPT IN LINUX THIS DOESNT APPLY TO YOU. 

anybody who knows linux can you help me, Write a script to automate the creation of new users and groups, i have this so far but the groups isnt working. I NEED HELP MAKING THIS WORK. HERE IS MY SCRIPT.

#!/bin/bash​

#location of txt with usernames ​

userfile=./users ​

#location of txt with groupnames ​

groupfile=./groups ​

#extract usernames ​

username=$(cat ./users | tr 'A-Z' 'a-z') ​

#define default password for usernames ​

password=ch@ng3m3! ​

#run loop to add users ​

for user in $username ​

do​

    useradd $user ​

    echo $password | passwd --stdin $user ​

    groupadd -f $groups​

done​

#extract groupnames ​

groupname=$(cat ./groupnames | tr "A-Z' 'a-z') ​

For groups in $groupname ​

do​

    groupadd -f $groups​

done​

#read total users processed with script ​

echo "$(wc -l ./users) users have been created" ​

tail -n$(wc -l ./users) /etc/passwd ​

#read total groups processed with script​

echo "$(wc -l ./groups) groups have been created"​

tail -n$(wc -l ./groups) /etc/group​

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