shell(1)

1:实现shell脚本中循环调用函数

 1     #!/bin/bash  
 2       
 3     output(){  
 4         for(( num1=1; num1 <= 5; num1++ ))  
 5             do  
 6                 echo -n "$num1 "  
 7             done  
 8     }  
 9       
10     let "num2=1"  
11     while [ "$num2" -le 5 ]  
12     do  
13         output  
14         echo  
15         let "num2=num2+1"  
16     done  

实现结果:

2:判断系统是否存在此文件

1 #!/bin/bash  
2 #文件系统相关测试  
3   
4 fpath="/etcc/passwd"  
5 if [ -e $fpath ];then  
6     echo File exits;  
7 else  
8     echo Does not exits  
9 fi 
原文地址:https://www.cnblogs.com/lemon-le/p/5795646.html