代码语言：javascript复制
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX_SIZE 1024
int main()
{
FILE *fstream = NULL;
int error=0;
char buff[MAX_SIZE]={0};
if(NULL == (fstream=popen("ls -r","w")))//这个应该是写方式的管道
{
fprintf(stderr,"execute command failed:%s",strerror(error));
return -1;
}
if(NULL != fgets(buff,sizeof(buff),fstream))
{
printf("%s",buff);
}
else
{
pclose(fstream);
return -1;
}
pclose(fstream);
printf("Hello world!n");
return 0;
}上面的函数功能，就是ls -r这个命令的结果输出到调试窗口
下面是输入的版本：主要是调用popen函数，这个函数的缺点是要默认的开启一个sh
代码语言：javascript复制#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define MAX_SIZE 1024
void InputShell(char * shell)
{
FILE *read_fp = NULL;
char buffer[MAX_SIZE];
int chars_read = 0;
memset(buffer, 0, sizeof(buffer));
read_fp = popen(shell, "r");
if (read_fp != NULL)
{
chars_read = fread(buffer, sizeof(char), MAX_SIZE, read_fp);
while (chars_read > 0)//读取多数shell命令，shell命令比较长。
{
buffer[chars_read - 1] = 0;
printf("Reading:n%sn", buffer);
chars_read = fread(buffer, sizeof(char), MAX_SIZE, read_fp);
}
pclose(read_fp);
//return EXIT_SUCCESS;
}
}
int main()
{
char shell[MAX_SIZE] = {0} ;//= NULL;
//while(1)
//{
scanf("%s",shell);
//gets(shell);
InputShell(shell);
//}
return EXIT_FAILURE;
}
