如何将标准错误输出重定向到一个文件的同时在屏幕上也显示，谢谢

enruan

如题

keenor

tee

enruan

Sorry,it isn't helpful.

keenor

bash# cat aa.c

1. 
   
2. #include <stdio.h>
   
3. #include <stdlib.h>
   
4. #include <string.h>
   
5. #include <unistd.h>
   
6. 
   
7. int main()
   
8. {
   
9.         write(2, "Hello World!\n", 13);
   
10. 
    
11.         return 0;
    
12. }
    

复制代码

bash# gcc -o aa aa.c
bash# ./aa 2>&1 |  tee ret
Hello World!
bash# cat ret

1. 
   
2. Hello World!
   

复制代码

Get the point?

home_king

楼主的问题已经基本解决了，各位兄弟请到shell版区查看。

enruan

最初由 keenor 发表
bash# cat aa.c

1. 
   
2. #include <stdio.h>
   
3. #include <stdlib.h>
   
4. #include <string.h>
   
5. #include <unistd.h>
   
6. 
   
7. int main()
   
8. {
   
9.         write(2, "Hello World!\n", 13);
   
10. 
    
11.         return 0;
    
12. }
    

复制代码

bash# gcc -o aa aa.c
bash# ./aa 2>&1 |  tee ret
Hello World!
bash# cat ret

1. 
   
2. Hello World!
   

复制代码

Get the point?

Sorry,mie point

what does aa.c do?
Only deal with the #2 file descriptor?

I meant I need 2 output stream from the #2 file descriptor
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;one is redirect to a file,
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;another is just show on the screen
ps.&nbsp;&nbsp;only use shell,not c programme


Thank 4 reply,

Can u give me another good 1?
xiexie