101个shell脚本 猜数字游戏代码

#!/bin/sh
 # hilow -- A simple number-guessing game

 biggest=100              # maximum number possible
 guess=0                # guessed by player
 guesses=0               # number of guesses made
 number=$(($$ % $biggest))       # random number, between 1 and $biggest

 while [ $guess -ne $number ] 
 do
  echo -n "Guess? " ; read guess
  if [ "$guess" -lt $number ] ; then
   echo "... bigger!"
  elif [ "$guess" -gt $number ] ; then
   echo "... smaller!i"
  fi
  guesses=$(($guesses + 1))
 done
 echo "Right!! Guessed $number in $guesses guesses."
 exit 0