#!/usr/bin/perl

use strict;
use warnings;

my $group_name = <STDIN>;
my $group_id = <STDIN>; 
my $user_name = <STDIN>;
my $user_id = <STDIN>;
my $choice = <STDIN>;

print "* My menu *\n";
print "* *\n";
print "* 1. Create a Unix Group  *\n";
print "* 2. Delete a Unix Group  *\n";
print "* 3. Create a Unix User *\n";
print "* 4. Delete a Unix USer *\n";
print "* 5. Quit *\n";
print "* *\n";
print "******************************************************\n";
print "* Enter Your Choice >\n";

$choice = <STDIN> ;

chomp $choice;
if ($choice == 1) {
  print "**********************************\n";
  print " Create A Unix Group\n";
  print "**********************************\n";
  print " Enter The Group Name to Create >\n";
  chomp ($group_name = <STDIN>);
  print " Enter the Group ID to Create >\n";
  chomp ($group_id = <STDIN> );

  if ( ! `grep -i $group_name /etc/group` ) {
    system ("/usr/sbin/groupadd $group_id $group_name");
    print "Group Created Successfully!\n"
  } else {
    print "Group Already Exists !\n";
  }
}


elsif ($choice == 2) {
  print "**********************************\n";
  print " Delete a Unix Group\n";
  print "**********************************\n";
  print " Enter a Group Name to Delete >\n";
  chomp ($group_name = <STDIN>);
  print " Enter a Group ID to Delete >\n";
  chomp ($group_id = <STDIN> );

  if ( ! `grep -i $group_name /etc/group` ) {
    system ("/usr/sbin/groupdel -g $group_id $group_name");
    print "Delete Group Successfully!\n"
  } else {
    print "Group Doesn't Exist !\n";
  }
}

chomp $choice;
if ($choice == 3) {
  print "**********************************\n";
  print " Create a Unix User\n";
  print "**********************************\n";
  print " Enter User Name You Want to Create >\n";
  chomp ($user_name = <STDIN>);
  print " Enter the User ID >\n";
  chomp ($user_id = <STDIN>);

  if ( ! `grep -i $user_name /etc/passwd` ) {
    system ("/usr/sbin/useradd -m $user_id $user_name");
    print "Added User Successfully!\n"
  } else {
    print "User Doesn't Exist !\n";
  }
}