linux shell中实现猜数字游戏
1、
root@PC1:/home/test2# ls test.sh root@PC1:/home/test2# cat test.sh ## 脚本 #!/bin/bash ANSWER=$(expr $RANDOM % 100) TIMES=0 echo "the range is 0-100, please guess." while true do read -p "please input your answer: " GUESS if [[ ! $GUESS =~ ^[0-9]+$ ]] then echo "please input an integer!" continue fi if [[ $GUESS -gt 100 || $GUESS -lt 0 ]] then echo "the range is 0-100! please try again!" continue fi let TIMES++ if [ $GUESS -eq $ANSWER ] then echo "you are right!" echo "you have guess $TIMES time!" exit 0 elif [ $GUESS -gt $ANSWER ] then echo "too big! please try again!" else echo "too small! please try again!" fi done
2、测试
root@PC1:/home/test2# bash test.sh the range is 0-100, please guess. please input your answer: 60 too big! please try again! please input your answer: abc please input an integer! please input your answer: 50 too big! please try again! please input your answer: 400 the range is 0-100! please try again! please input your answer: 30 too small! please try again! please input your answer: 40 too big! please try again! please input your answer: 35 too big! please try again! please input your answer: 33 too small! please try again! please input your answer: 34 you are right! you have guess 7 time!