Join Centos 6 to Domian

Centos_6_or_7.sh

#!/bin/bash
NETBIOS="$1"
FQDN="$2"
USER="$3"

#install files
sudo yum -y install authconfig krb5-workstation pam_krb5 samba-winbind oddjob-mkhomedir nscd

#create auth settings
authconfig --enablecachecreds --enablewinbind --enablewinbindauth --smbsecurity=ads --smbworkgroup=$NETBIOS --smbrealm=$FQDN --enablewinbindusedefaultdomain --winbindtemplatehomedir=/home/$NETBIOS/%U --winbindtemplateshell=/bin/bash --enablekrb5 --krb5realm=$FQDN --enablekrb5kdcdns --enablekrb5realmdns --enablelocauthorize --enablemkhomedir --enablepamaccess --updateall

#join
net ads join $FQDN -U $USER