ulimit open files linux打开文件数设置验证

1 #include <stdio.h>
2 #include <sys/types.h>
3 #include <fcntl.h>
4 #include <stdlib.h>
5 #include <unistd.h>
6
7 int main(int argc,char *argv[]){
8
9     int fd;
10     char name[1024];
11     int i = 0;
12     while(1){
13         sprintf(name,"file%d",++i);
14         fd = open(name,O_CREAT,0777); //超过最大打开数时再打开会出错，返回-1
15         if (fd == -1){
16             exit(1);
17         }
18         printf("%d ",i);
19     }
20     return 0;
21 }