chmod(logfile_name.c_str(), 0600);
// output current time
char outstr[200];
time_t t = time(NULL);
struct tm *tmp = localtime(&t);
strftime(outstr, sizeof(outstr), "%F %T", tmp);
chmod(logfile_name.c_str(), 0600);
// output current time
char outstr[200];
time_t t = time(NULL);
struct tm *tmp = localtime(&t);
strftime(outstr, sizeof(outstr), "%F %T", tmp);