我要评论作为一名linux sa，日常运维中很多地方都会用到脚本，而服务器的ip一般采用静态ip或者mac绑定，当然后者比较操作起来相对繁琐，而前者我们可以设置主机名、ip信息、网关等配置。修改成特定的主机名在维护和管理方面也比较方便。如下脚本用途为：修改ip和主机名等相关信息，可以根据实际需求修改，举一反三！
#!/bin/sh
#auto change ip netmask gateway scripts
#wugk 2012-12-17
cat <<eof
++++++++自动修改ip和主机名等相关信息+++++++++
ethconf=/etc/sysconfig/network-scripts/ifcfg-eth0
hosts=/etc/hosts
network=/etc/sysconfig/network
dir=/data/backup/`date +%y%m%d`
netmask=255.255.255.0
+++++++++-------------------------+++++++++++
eof
#define path 定义变量，可以根据实际情况修改
ethconf=/etc/sysconfig/network-scripts/ifcfg-eth0
hosts=/etc/hosts
network=/etc/sysconfig/network
dir=/data/backup/`date +%y%m%d`
netmask=255.255.255.0
echo "================================================"
echo
#定义change_ip函数
function change_ip ()
{
#判断备份目录是否存在，中括号前后都有空格，！叹号在shell表示相反的意思#
if
[ ! -d $dir ];then
mkdir -p $dir
fi
echo "now change ip address ,doing backup interface eth0"
cp $ethconf $dir
grep "dhcp" $ethconf
#如下$?用来判断上一次操作的状态，为0，表示上一次操作状态正确或者成功#
if
[ $? -eq 0 ];then
#read -p 交互输入变量ipaddr，注冒号后有空格，sed -i 修改配置文件#
read -p "please insert ip address:" ipaddr
sed -i 's/dhcp/static/g' $ethconf
#awk -f. 意思是以.号为分隔域，打印前三列#
echo -e "ipaddr=$ipaddr\nnetmask=$netmask\ngateway=`echo $ipaddr|awk -f. '{print $1"."$2"."$3}'`.254" >>$ethconf
echo "this ip address change success !"
else
echo -n "this $ethconf is static exist ,please ensure change yes or no":
read i
fi
if
[ "$i" == "y" -o "$i" == "yes" ];then
read -p "please insert ip address:" ipaddr
count=(`echo $ipaddr|awk -f. '{print $1,$2,$3,$4}'`)
#定义数组， ${#count[@]}代表获取变量值总个数#
a=${#count[@]}
#while条件语句判断，个数是否正确，不正确循环提示输入，也可以用[0-9]来判断ip#
while
[ "$a" -ne "4" ]
do
read -p "please re inster ip address,example 192.168.0.11 ip": ipaddr
count=(`echo $ipaddr|awk -f. '{print $1,$2,$3,$4}'`)
a=${#count[@]}
done
#sed -e 可以连续修改多个参数#
sed -i -e 's/^ipaddr/#ipaddr/g' -e 's/^netmask/#netmask/g' -e 's/^gateway/#gateway/g' $ethconf
#echo -e \n为连续追加内容，并自动换行#
echo -e "ipaddr=$ipaddr\nnetmask=$netmask\ngateway=`echo $ipaddr|awk -f. '{print $1"."$2"."$3}'`.254" >>$ethconf
echo "this ip address change success !"
else
echo "this $ethconf static exist,please exit"
exit $?
fi
}
#定义hosts函数
############function hosts##############
function change_hosts ()
{
if
[ ! -d $dir ];then
mkdir -p $dir
fi
cp $hosts $dir
read -p "please insert ip address": ipaddr
host=`echo $ipaddr|sed 's/\./-/g'`
cat $hosts |grep 127.0.0.1 |grep "$host"
if
[ $? -ne 0 ];then
sed -i "s/127.0.0.1/127.0.0.1 $host/g" $hosts
echo "this hosts change success "
else
echo "this $host is exist .........."
fi
}
###########fuction network###############
#定义network函数
function change_network ()
{
if
[ ! -d $dir ];then
mkdir -p $dir
fi
cp $network $dir
read -p "please insert ip address": ipaddr
host=`echo $ipaddr|sed 's/\./-/g'`
grep "$host" $network
if
[ $? -ne 0 ];then
sed -i "s/^hostname/#hostname/g" $network
echo "network=$host" >>$network
else
echo "this $host is exist .........."
fi
}
#ps3一般为菜单提示信息#
ps3="please select ip or hosts menu":
#select为菜单选择命令，格式为select $var in ..command.. do .... done
select i in "change_ip" "change_hosts" "change_network"
do
#case 方式，一般用于多种条件下的判断
case $i in
change_ip )
change_ip
;;
change_hosts )
change_hosts
;;
change_network )
change_network
;;
*)
echo
echo "please insert $0: change_ip(1)|change_hosts(2)|change_network(3)"
echo
;;
esac
done
您可能感兴趣的文章:
如您对本文有疑问或者有任何想说的，请 点击进行留言回复，万千网友为您解惑！
网友评论