#!/bin/bash num=`echo $random$random |cut -c 2-3` date=`date +%y%m%d-%h:%m` read -p please input your name: user i=1 while true do read -p please input a double-digit: input case $input in [0-9][0-9] ) if [ $input -gt $num ] ;then echo try smaller! elif [ $input -lt $num ];then echo try bigger! else echo good! you are right! break; fi ;; *) echo the number should be in 1 to 100: ;; esac i=$((i+1)) done printf %-12s %s\n your record is $i! try better next time! $date |tee -a ./record.record printf \n\n printf %15s %6s %-8s\n ----- history record ----- cat ./record.record |sort -k5 -g|awk -f! '{print $1,!,$3}'|head -10 printf %15s %6s %-8s\n ----- history record -----