shell 基础

 

#!/bin/bash
echo "Hello!"
your_name="yyx"
echo $your_name
echo $PATH
my_arry=(1 2 3 4)
value_arry=${my_arry[@]}
echo ${value_arry}
for a in my_arry;do
echo ${a}
done
#echo ${a}
for skill in Ada Coffe Action Java; 
do
    echo "I am good at ${skill}Script"
done
#if
if(1>3)
then
  echo "1>3大于"
  elif(2>1)
then
    echo "2>1 大于"
else
   echo "小于"
fi
#while
while 1>2
 do
  echo " while循环的 1>2大于"
  break
 done
 #case 
 case "你好" in 
    "你好") echo "你好"
     ;;
     "好好") echo "好好"
 esac
 #函数
 show(){
   echo "显示函数"
 }
 
 show
 
   
     

　　

centos 如果运行不了

安装 

sudo yum install dos2unix
dos2unix test.sh