./*.sh 和 sh *.sh执行的结果不同

Windeal

测试脚本文件

1. windeal@ubuntu:~/Windeal/shell$ cat test.sh
   
2. #!/bin/bash
   
3. 
   
4. echo "hello\n"
   
5. echo -e "hello\n"
   
6. windeal@ubuntu:~/Windeal/shell$
   

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使用./*.sh执行结果为：

1. windeal@ubuntu:~/Windeal/shell$ ./test.sh
   
2. hello\n
   
3. hello
   
4. 
   
5. windeal@ubuntu:~/Windeal/shell$
   

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使用sh *.sh执行结果为

1. windeal@ubuntu:~/Windeal/shell$ sh test.sh
   
2. hello
   
3. 
   
4. -e hello
   
5. 
   
6. windeal@ubuntu:~/Windeal/shell$

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另一个错误的例子

判断符 []在sh *.sh方式执行中不能成功
测试脚本如下

1. windeal@ubuntu:~/Windeal/shell$ cat sh06.sh
   
2. #!/bin/bash
   
3. #Program
   
4. # "test the func of []"
   
5. #History:
   
6. #2014-08-14        Windeal
   
7. #version        1
   
8. #All rights reserved;
   
9. 
   
10. PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
    
11. export PATH
    
12. read -p "Please enter (y/n):" yn
    
13. [ "$yn" == "Y" -o "$yn" == "y" ] && echo "your input is y" && exit 0
    
14. [ "$yn" == "N" -o "$yn" == "n" ] && echo "your input is n" && exit 0
    
15. echo "I don't know what you choice\n"
    
16. windeal@ubuntu:~/Windeal/shell$

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使用./*.sh方式执行没问题:

1. windeal@ubuntu:~/Windeal/shell$ ./sh06.sh
   
2. Please enter (y/n):y
   
3. your input is y
   
4. windeal@ubuntu:~/Windeal/shell$
   

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使用sh *.sh执行报错

1. windeal@ubuntu:~/Windeal/shell$ sh sh06.sh
   
2. Please enter (y/n):y
   
3. sh06.sh: 12: [: y: unexpected operator
   
4. sh06.sh: 13: [: y: unexpected operator
   
5. I don't know what you choice
   
6. 
   
7. windeal@ubuntu:~/Windeal/shell$

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znnnz

不明觉厉              

非凡公子

./*.sh 中echo应该 是调用的/bin/echo
sh *.sh中的echo应该是调用的shell内置的命令
嗯,应该是这样,你照这个方向查一下.

nimysun

q1208c 说

1. sh != bash

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