LinuxQuestions.org - C program to see user log on in system and print user with real user name also

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naveen245

12-19-2005 02:43 AM

C program to see user log on in system and print user with real user name also

WHAT IS WRONG WID THIS PROGRAM

#include <sys/types.h>
#include <utmp.h>
#include <pwd.h>
#include <stdio.h>

int main(int argc, char *argv[]){

struct passwd *buffer;
struct utmp *naveen;
{
while((buffer=getpwent()!=NULL))
printf("%s", buffer->pw_gecos);
printf("%s", naveen->ut_user);
}

}

jim mcnamara

12-19-2005 09:23 AM

You need to call getutid() on the utmp file to get information about that user's last login. Also your while loop "isn't" whar you think.

Code:

#include <sys/types.h>

#include <utmp.h>

#include <pwd.h>

#include <stdio.h>



int main(int argc, char *argv[]){



  struct passwd *buffer;

  struct utmp *naveen;



  while((buffer=getpwent()!=NULL)){

      printf("%s", buffer->pw_gecos);

      <--------- get a utmp record here -------->

      printf("%s", naveen->ut_user);

  }

  return 0;

}

naveen245

12-21-2005 12:53 AM

jim i didnt get you dude. Can you please show it

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