echo “警告:你的地址为＄fhq禁止非法登录!”
exit
fi
case “＄0” in
－sh | －rsh | －ksh | －rksh | /etc/profile)
[“X＄HUSHLOGIN” !=“XTRUE”] ＆＆ [ －s /etc/motd ] ＆＆ {
trap : 1 2 3
echo “”＃ skip a line
cat /etc/motd
trap “”1 2 3
}
if [“X＄HUSHLOGIN”!=“XTRUE”]
then
[ －x /usr/bin/mail ] ＆＆ { ＃ if the program is installed
[ －s “＄MAIL”] ＆＆ echo “\you have mail”
}
if [“＄LOGNAME”!=“root”－a －x /usr/bin/news ] ＃ be sure it's there
then news －n
fi
fi
;;
－su)
:
;;
esac
trap 1 2 3
(4)创建/etc/.safe文件,加入允许登录的计算机的IP地址,一个地址占一行,格式如下所示
(195.1.2.3)
(194.10.2.4) |
