tracker_write

為免 i/o buffer 令一些 tracking message 印唔切, 寫了個用 fflush 清 stdout buffer o既 program 比 script 呼叫.

#include <stdio.h>
#include <time.h>

int main(int argc, char *argv[])
{
        FILE *fp;
        int pres;

        time_t now;
        struct tm *stime;
        char timeval[20];

        if (argc < 3)
        {
                fprintf(stderr,"%s  \n",argv[0]);
                exit(-1);
        }

        if (fp = fopen(argv[1],"a"))
        {
                now = time(NULL);
                stime = localtime(&now);
                sprintf(timeval,"%d%02d%02d %02d:%02d:%02d",stime->tm_year + 1900,stime->tm_mon + 1,stime->tm_mday,stime->tm_hour,stime->tm_min,stime->tm_sec);

                pres = fprintf(fp,"%s %s\n",timeval,argv[2]);
                fflush(fp);
                fclose(fp);
                if (pres < 0)
                {
                        fprintf(stderr,"File %s write error.\n",argv[1]);
                }
        }
        else
        {
                fprintf(stderr,"File %s could not open.\n",argv[1]);
                exit(-1);
        }
}