公司新一批服务器&＃xff0c;要一台台做初始化很繁琐&＃xff0c;写了了shell脚本&＃xff0c;给大家参考&＃xff01;

   

#!/bin/bash
#author luoz
#2013-07-01
echo "Welcome to Centos5.5 64 System init!"
#set service
for i in &＃96;ls /etc/rc3.d/S* | grep -v local&＃96;
do
CURSRV&＃61;&＃96;echo $i|cut -c 15-&＃96;
echo $CURSRV
case $CURSRV in
crond | irqbalance | network | sshd | syslog )
echo "Base services, Skip!"
;;
*)
echo "change $CURSRV to off"
chkconfig --level 235 $CURSRV off
service $CURSRV stop
;;
esac
done
echo "service set OK"
#set tty
sed -i &＃39;/^4:2345/s/4:2345/#4:2345/&＃39; /etc/inittab
sed -i &＃39;/^5:2345/s/5:2345/#5:2345/&＃39; /etc/inittab
sed -i &＃39;/^6:2345/s/6:2345/#6:2345/&＃39; /etc/inittab
/sbin/init q
echo "tty set OK!"
#set ulimit
echo "ulimit -HSn 65535" >> /etc/profile
echo "ulimit -SHn 65535" >> /etc/rc.local
echo "* soft nofile 65535" >> /etc/security/limits.conf
echo "* hard nofile 65535" >> /etc/security/limits.conf
echo "ulimit set OK!"
#set sysctl
cat >> /etc/sysctl.conf <net.ipv4.tcp_tw_recycle &＃61; 1
net.ipv4.tcp_tw_reuse &＃61; 1
net.ipv4.tcp_fin_timeout &＃61; 30
net.ipv4.tcp_keepalive_time &＃61; 1800
net.ipv4.tcp_max_syn_backlog &＃61; 4096
net.ipv4.tcp_synCOOKIEs &＃61; 1
net.ipv4.icmp_echo_ignore_broadcasts &＃61;1
net.ipv4.ip_conntrack_max &＃61; 100000
EOF
/sbin/sysctl -p
echo "sysctl set OK!"
#set ssh
ssh_cf&＃61;"/etc/ssh/sshd_config"
sed -i &＃39;s/#GSSAPIAuthentication no/GSSAPIAuthentication no/&＃39; $ssh_ch
sed -i &＃39;s/GSSAPIAuthentication yes/#GSSAPIAuthentication yes/&＃39; $ssh_ch
sed -i "s/#UseDNS yes/UseDNS no/" $ssh_cf
service sshd restart
echo "ssh set OK!"
#set LANG
true > /etc/sysconfig/i18n
cat >>/etc/sysconfig/i18n<LANG&＃61;"zh_CN.UTF-8"
SYSFONT&＃61;"latarcyrheb-sun16"
EOF
echo "LANG set OK!"
#set ntp
echo "* 1 * * * /usr/sbin/ntpdate 210.72.145.44 > /dev/null 2>&1" >> /etc/crontab
chkconfig --level 3 ntpd on
service crond restart
echo "LANG set OK!"
#set dns
echo &＃39;nameserver 192.168.30.35&＃39; > /etc/resolv.conf
echo &＃39;search localdomain&＃39; >> /etc/resolv.conf
echo "DNS set OK!"
#set selinux
sed -i &＃39;/SELINUX/s/enforcing/disabled/&＃39; /etc/selinux/config
echo "selinux set OK!"
#disable ipv6
echo "alias net-pf-10 off" >> /etc/modprobe.conf
echo "alias ipv6 off" >> /etc/modprobe.conf
echo "ipv6 set OK!"

        如有问题&＃xff0c;请联系我&＃xff0c;希望有大家多交流&＃xff01;