如何在C中使system（）命令不在屏幕上显示任何内容？ [关闭]

Question

  I have a cgi program in c where I am using a system call for getting the present working directory (pwd). I used
system(pwd);
, but this will print the directory name on screen(html) which I don't need as of now.

Is there any way to make the system () function not to display anything,? (Something similar to shell_exec() in php where the output is displayed only when we need it to be displayed)..

Answer 1

Looks like you are on a Linux/Unix system.

You can get the pwd from the environment, you don't need to use system:

#include <stdlib.h>

char *pwd = getenv("PWD");

For your reference, here is one example on how you can get the output from system (there are other ways):

Getting output of a system command from stdout in C