Scripts after the Linux server installation

#!/bin/bash

HOSTNAME="$1"

IPADDR=$2

INTNAME=$3

SUBFIX=$(date +%s)

if [ $# -ne 3 ]; then

echo "The parameter is not right"

echo "$(basename $0) hostname ipaddress interfaceName"

echo "e.g: $(basename $0) ora119.sleety.com 192.168.146.119 eth0"

exit 1

fi

echo $HOSTNAME

echo $IPADDR

echo $INTNAME

read -p "Go on? (y|n)" ANSWER

echo $ANSWER

ANSWER=$(echo $ANSWER | tr 'A-Z' 'a-z')

if [ $ANSWER = 'n' ]; then

exit 1

fi

#################################################################

echo "Changing the hostname"

echo "Backup the /etc/sysconfig/network"

cp /etc/sysconfig/network /etc/sysconfig/network.${SUBFIX}

echo "Modify it"

hostname ${HOSTNAME}

sed -i -e "/HOSTNAME/s/.*/HOSTNAME=${HOSTNAME}/" /etc/sysconfig/network

##############################################################################

### Transfer the $INTNAME to lowercase, for example, ETH0 -> eth0

INTNAME=$(echo $INTNAME | tr 'A-Z' 'a-z' )

INTNAME=/etc/sysconfig/network-scripts/ifcfg-${INTNAME}

echo "Changing the ${INTNAME}'s ip address "

echo "Backup the ${INTNAME}"

cp ${INTNAME} ${INTNAME}.${SUBFIX}

echo "Modify the $INTNAME"

sed -i -e '/BOOTPROTO/s/dhcp/static/' -e '/IPV6/s/yes/no/' -e '/ONBOOT/s/no/yes/' ${INTNAME}

echo "IPADDR=${IPADDR}" >> ${INTNAME}

##################################################################################

echo "Changing the /etc/sysconfig/selinux"

echo "backup it"

cp /etc/sysconfig/selinux /etc/sysconfig/selinux.${SUBFIX}

sed -i -e '/SELINUX=enforcing/s/.*/SELINUX=disabled/' /etc/sysconfig/selinux

#############################################################################

echo "Changing the init level: /etc/inittab"

echo "Backup it"

cp /etc/inittab /etc/inittab.${SUBFIX}

sed -i -e '/id:5:init/s/.*/id:3:initdefault:/' /etc/inittab

echo "Done"