只是寫了一個架構 提取系統時間 寫到文本 讀者可以根據自己情況修改
#include <stdlib.h>#include <stdio.h>#include<string.h>#include <time.h>#include <sys/time.h>#include <sys/types.h>#include <sys/stat.h>#include <fcntl.h>#include <unistd.h>void main(){ char logtime[40];char date[40];char buf[30];//用於組建目錄名char dest[100];struct timeval tv;//擷取納秒級 gettimeofday(&tv,0);int fd,len; time_t now_time; now_time=time(NULL);strftime(buf,sizeof(buf),"./log/20%y-%m-%d.log",localtime(&now_time));//以日子作為檔案名稱strftime(logtime,sizeof(logtime),"日期:20%y-%m-%d 時間:%H:%M:%S",localtime(&now_time));sprintf(date,"%s.%03d\n",logtime,tv.tv_usec/1000);//用於記錄時間system("find /home/jiajunjie/log/ -atime +7 -exec rm {} '\;'");//-mtime +7七天前 -amin +1一分鐘前sleep(3);fd=open(buf,O_CREAT| O_RDWR,0664);lseek(fd,0,SEEK_END);write(fd,date,strlen(date));printf("%s",date);close(fd);}
http://www.centos.bz/2011/05/time-to-delete-expired-files-linux/