#指令碼編輯

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#!/bin/bash

#定義變數 num1=$1
num2=$2   #判斷是否輸入兩個引數，若是，將兩個引數傳遞給下一個指令動作，若非兩個引數，則列印輸出內容輸出並且退出exit指令碼不執行下一個指令
if [ $# -ne 2 ] ;then
   echo 'please input num1 & num2:'
exit
fi   #以上判斷後，輸入的兩個引數將傳遞到如下指令判斷
if [ $num1 -gt $num2 ] ; then
   echo $num1 great than $num2   else if [ $num1 -lt $num2 ] ; then    echo $num1 less than $num2   else
   echo $num1 equal $num2   fi  
fi  

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  #驗證是否正確   [[email protected] scripts]# sh compare2.sh 66 please input num1 & num2: [[email protected] scripts]# sh compare2.sh 10 10 10 equal 10 [

[email protected] scripts]# sh compare2.sh 10 1 10 great than 1 [[email protected] scripts]# sh compare2.sh 10 50 10 less than 50 [[email protected] scripts]# sh compare2.sh 6 7 8 9 10 please input num1 & num2: