一个带菜单的内存统计简单脚本

#!/bin/bash
tput setb 1
tput setf 4
while true
do
        clear
echo '
****************************************
* sample free mem collect              *
* version: 1.0                         *
****************************************
'
seq -s= 1 100|sed -e 's/[0-9]//g'
date=`date +"%d%m%Y"`
echo -ne "USER:$USER\tHOST:$HOSTNAME\tDATE:$date"
echo
seq -s= 1 100 |sed -e 's/[0-9]*//g'
echo -e "1:查看系统内存统计;"
echo -e "2:查看系统内存统计，并写入当前日期时间的文件;"
echo -e "3:退出脚本;"
seq -s= 1 100 |sed -e 's/[0-9]*//g'
echo 'talen hao'
echo -n "请选择操作（1,2,3）:"
read operate
case $operate in
        1)
        echo -n "请输入统计次数："
        read times
        echo -n "请输入统计时间间隔（秒）："
        read second
        echo -n '开始提取:'
        echo -e $time
        free -c $times -s $second
        echo "提取结束......"
break
;;
        2)
        time2=`date +%Y-%m-%d\_%T`
        echo -n "请输入统计次数："
        read times2
        echo -n "请输入统计时间间隔（秒）："
        read second2
        echo -n '开始提取:'
        echo -e $time
        free -c $times2 -s $second2 |tee $time2.log
        echo "统计完成，详细请查看$time2.log"
break
;;
        3)
        echo "正在退出..."
        exit
;;
        *)
        echo '输入数字错误，Enter键返回'
;;
esac
read opendoc
done

效果如下：