新手求救！！！！！！！

fff12311

今天写了个脚本 放在了/etc/profile里面，结果到了level3 登录那里，每次输入root +密码，就再跳出level3的登录，然后就一直循环这样，进入单用户模式init1 结果直接去到level 3的登录界面，请教老鸟要怎么救回
#!/bin/bash
file="/etc/sysconfig/network-scripts/ifcfg-eth0"
hip=`grep "IPADDR" $file|awk -F"=" '{print$2}'`
gate=`grep "GATEWAY" $file|awk -F"=" '{print$2}'`
hname=`grep "HOSTNAME" /etc/sysconfi/network |awk -F"=" '{print$2}'`
if [ $hip == "192.168.1.254" ];then
        sed -ri "/HOSTNAME/s/${hname}/tearcher.up.com/" $file
        echo "change hostname to tearcher.up.com done"
        sed -ri "/GATEWAY/s/${gate}/192.168.1.1/" $file
        echo "change gataway to 192.168.1.1 done"
        sed -ri '/initdefault/s/[0-9]/3/'
        echo "change runlevel to 3 done"
        else
                exit
fi