C: Run a System Command and Get Output? 在C程序中调用工具,并且得到结果。

现在在做一个WIFI API相关的库,这样就可以让其他的人管理WIFI.

在调用API的时候要回复SHELL打印的信息,比如说搜索热点,而且不在SHELL中打印出来。然后把信息返回给调用API的程序。

#include <stdio.h>
#include <stdlib.h> int main( int argc, char *argv[] )
{ FILE *fp;
char path[1035]; /* Open the command for reading. */
fp = popen("/bin/ls /etc/", "r");
if (fp == NULL) {
printf("Failed to run command\n" );
exit(1);
} /* Read the output a line at a time - output it. */
while (fgets(path, sizeof(path), fp) != NULL) {
printf("%s", path);
} /* close */
pclose(fp); return 0;
} You want the "popen" function. Here's an example of running the command "ls /etc" and outputing to the console.
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