shell 菜单选项 分析日志脚本

#!/bin/bash
#program:
#        This program is used to show messages in screen!

#Author:

#        linuxman
#history:
#        2010/09/27      linuxman First release

curtime=`date "+%T %F"`
title=linuxman
menu () {

        cat <       DATE:$curtime
        ***************************
        **     author:$title     **
        ***************************
        **1)localhost ip         **
        **2)login messages       **
        **3)error messages       **
        **4)exit                 **
        ***************************
linuxman
}
while :
do
clear
menu
echo -n "        please choose [1-4]:"
read num
case $num in
        1)
         echo -e "local ip:\n `ifconfig | awk '/inet addr/{ print $2 }' | awk -F                                                                                                  : '{ print $2 }' | grep -v "127"`"
         echo -e "\n"
         exit
         ;;
        2)
         hoch="`grep -iE "accepted" /var/log/secure`" && echo  "$hoch" || echo "                                                                                                 no messages!"
         exit
         ;;
        3)
         hoch="`grep -iE "failed|error|not" /var/log/messages`" && echo "$hoch"                                                                                                  || echo -e "\n \t(*!*)no messages!"
         echo -e "\n"
         exit
         ;;
        4)
         exit
         ;;
        *)
        clear
        continue
        ;;
esac
done