#!/bin/bash
. /etc/init.d/functions
# Defined result function
function Msg(){
if [ $? -eq 0 ];then
action "$1" /bin/true
else
action "$1" /bin/false
fi
}
# Defined IP function
function ConfigIP(){
Suffix1="$1"
Suffix2="$2"
sed -ri "s#(IPADDR=)(.*)#\1$Suffix1#" /etc/sysconfig/network-scripts/ifcfg-eth0
ifdown eth0 && ifup eth0
Msg "config eth0"
sed -ri "s#(IPADDR=)(.*)#\1$Suffix2#" /etc/sysconfig/network-scripts/ifcfg-eth1
ifdown eth1 && ifup eth1
Msg "config eth1"
}
# Defined Yum source Functions
function yum(){
YumDir=/etc/yum.repos.d
wget -O $YumDir/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
Msg "YUM source"
}
# Defined Close selinux Functions
function selinux(){
[ -f "/etc/selinux/config" ] && {
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config
setenforce 0
Msg "Close selinux"
} || Msg "Close selinux"
}
# Defined Close iptables Functions
function iptablesOff(){
/etc/init.d/iptables stop
chkconfig iptables off
}
# Defined add Ordinary users Functions
function AddUser(){
useradd oldboy &>/dev/null &&\
echo "123456"|passwd --stdin oldboy &>/dev/null &&\
sed -i '98a oldboy ALL=(ALL) NOPASSWD:ALL' /etc/sudoers &&\
visudo -c &>/dev/null
Msg "AddUser oldboy"
}
# Defined Hide the system version number Functions
function HideVersion(){
[ -f "/etc/issue" ] && >/etc/issue
Msg "Hide issue"
[ -f "/etc/issue.net" ] && > /etc/issue.net
Msg "Hide issue.net"
}
# Defined SSHD config Functions
function sshd(){
SshdDir=/etc/ssh
[ -f "$SshdDir/sshd_config" ] && \
sed -i.bak 's#GSSAPIAuthentication yes#GSSAPIAuthentication no#g;s@#UseDNS yes@UseDNS no@g' $SshdDir/sshd_config
Msg "sshd config"
}
# Defined OPEN FILES Functions
function openfiles(){
[ -f "/etc/security/limits.conf" ] && {
echo '* - nofile 65535' >> /etc/security/limits.conf
Msg "open files"
}
}
# Defined System Startup Services Functions
function boot(){
for i in `chkconfig --list|grep "3:on"|awk '{print $1}'|egrep -v "crond|network|rsyslog|sshd|sysstat"`
do
chkconfig $i off
done
Msg "BOOT config"
}
# Defined Time Synchronization Functions
function Time(){
echo "#time sync by $(whoami) at $(date +%F)" >>/var/spool/cron/root
echo '*/5 * * * * /usr/sbin/ntpdate ntp1.aliyun.com &>/dev/null' >>/var/spool/cron/root
Msg "Time Synchronization"
}
# Defined main Functions
function main(){
iptablesOff
selinux
[ ! -z "$1" -a ! -z "$2" ] && ConfigIP "$1" "$2"
AddUser
HideVersion
sshd
openfiles
boot
Time
yum
}
main "$1" "$2"
原文链接：https://www.f2er.com/centos/377757.html