ldapadd -h localhost -x -D "cn=Manager,dc=zlango,dc=com" -W -f base.ldif 
Enter LDAP Password: 
ldapadd: attributeDescription "dn": (possible missing newline after line 6 of entry "dc=zlango,dc=com"?)
ldapadd: attributeDescription "dn": (possible missing newline after line 9 of entry "dc=zlango,dc=com"?)
ldapadd: attributeDescription "dn": (possible missing newline after line 12 of entry "dc=zlango,dc=com"?)
adding new entry "dc=zlango,dc=com"
ldap_add: Type or value exists (20)
	additional info: objectClass: value #3 provided more than once

#
# See slapd.conf(5) for details on configuration options.
# This file should NOT be world readable.
#
include		/etc/openldap/schema/core.schema
include		/etc/openldap/schema/cosine.schema
include		/etc/openldap/schema/inetorgperson.schema
include		/etc/openldap/schema/nis.schema

# Allow LDAPv2 client connections.  This is NOT the default.
allow bind_v2

# Do not enable referrals until AFTER you have a working directory
# service AND an understanding of referrals.
#referral	ldap://root.openldap.org

pidfile		/var/run/openldap/slapd.pid
argsfile	/var/run/openldap/slapd.args

# Load dynamic backend modules:
# modulepath	/usr/lib64/openldap
# moduleload	back_bdb.la
# moduleload	back_ldap.la
# moduleload	back_ldbm.la
# moduleload	back_passwd.la
# moduleload	back_shell.la

# The next three lines allow use of TLS for encrypting connections using a
# dummy test certificate which you can generate by changing to
# /etc/pki/tls/certs, running "make slapd.pem", and fixing permissions on
# slapd.pem so that the ldap user or group can read it.  Your client software
# may balk at self-signed certificates, however.
# TLSCACertificateFile /etc/pki/tls/certs/ca-bundle.crt
# TLSCertificateFile /etc/pki/tls/certs/slapd.pem
# TLSCertificateKeyFile /etc/pki/tls/certs/slapd.pem

# Sample security restrictions
#	Require integrity protection (prevent hijacking)
#	Require 112-bit (3DES or better) encryption for updates
#	Require 63-bit encryption for simple bind
# security ssf=1 update_ssf=112 simple_bind=64

# Sample access control policy:
#	Root DSE: allow anyone to read it
#	Subschema (sub)entry DSE: allow anyone to read it
#	Other DSEs:
#		Allow self write access
#		Allow authenticated users read access
#		Allow anonymous users to authenticate
#	Directives needed to implement policy:
# access to dn.base="" by * read
# access to dn.base="cn=Subschema" by * read
# access to *
#	by self write
#	by users read
#	by anonymous auth
#
# if no access controls are present, the default policy
# allows anyone and everyone to read anything but restricts
# updates to rootdn.  (e.g., "access to * by * read")
#
# rootdn can always read and write EVERYTHING!

#######################################################################
# ldbm and/or bdb database definitions
#######################################################################

database	bdb
suffix		"dc=zlango,dc=com"
rootdn		"cn=Manager,dc=zlango,dc=com"
# Cleartext passwords, especially for the rootdn, should
# be avoided.  See slappasswd(8) and slapd.conf(5) for details.
# Use of strong authentication encouraged.
rootpw			{MD5}3OwCycMA61rgH7kP4G7fuw==

# The database directory MUST exist prior to running slapd AND 
# should only be accessible by the slapd and slap tools.
# Mode 700 recommended.
directory	/var/lib/ldap

# Indices to maintain for this database
index objectClass                       eq,pres
index ou,cn,mail,surname,givenname      eq,pres,sub
index uidNumber,gidNumber,loginShell    eq,pres
index uid,memberUid                     eq,pres,sub
index nisMapName,nisMapEntry            eq,pres,sub

# Replicas of this database
#replogfile /var/lib/ldap/openldap-master-replog
#replica host=ldap-1.example.com:389 starttls=critical
#     bindmethod=sasl saslmech=GSSAPI
#     authcId=host/ldap-master.example.com@EXAMPLE.COM

access to attrs=userPassword
    by self write
    by dn="cn=Manager,dc=zlango,dc=com" write
    by anonymous auth
    by * none
 
access to *
    by dn="cn=Manager,dc=zlango,dc=com" write
    by self write
    by * read

dn: dc=zlango,dc=com
o: zlango Organization
dc: zlango
description: zlango LDAP server
#objectClass: top
objectClass: dcObject
objectClass: organization
 
dn: cn=Manager,dc=zlango,dc=com
objectClass: organizationalRole
cn: manager
 
dn: ou=People,dc=zlango,dc=com
objectClass: organizationalUnit
ou: People
 
dn: ou=Group,dc=zlango,dc=com
objectClass: organizationalUnit
ou: Group

dn: dc=zlango,dc=com
dc: zlango
description: zlango LDAP server
objectClass: dcObject
objectClass: organization
o: zlango Organization
 
dn: ou=People, dc=zlango,dc=com
ou: People
objectClass: organizationalUnit
 
dn: ou=Group,dc=zlango,dc=com
ou: Group
objectClass: organizationalUnit

#!/bin/bash
# add a user to Linux system
if [ $(id -u) -eq 0 ]; then
        read -p "Enter username : " username
        read -s -p "Enter password : " password
        egrep "^$username" /etc/passwd >/dev/null
        if [ $? -eq 0 ]; then
                echo "$username exists!"
                exit 1
        else
                pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
                useradd -m -p $pass $username
                [ $? -eq 0 ] && echo "User has been added to system!" || echo "Failed to add a user!"
        fi
else
        echo "Only root may add a user to the system"
        exit 2
fi

# create files for adding user and group to LDAP Server
cd /root
grep ^$username /etc/passwd > passwd
grep ^$username /etc/group > group
/usr/share/openldap/migration/migrate_passwd.p passwd > passwd.ldif
/usr/share/openldap/migration/migrate_group.p group > group.ldif

# add user and group to LDAP Server
ldapadd -h localhost -x -D "cn=Manager,dc=zlango,dc=com" -W -f passwd.ldif
ldapadd -h localhost -x -D "cn=Manager,dc=zlango,dc=com" -W -f group.ldif

access to attrs=userPassword
    by self write
    by dn="cn=Manager,dc=zlango,dc=com" write
    by anonymous auth
    by * none
 
access to *
    by dn="cn=Manager,dc=zlango,dc=com" write
    by self write
    by * read