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program to implement who command



program to implement who command

#include<stdio.h>
#include<sys/utsname.h>
#include<utmp.h>
int main(void)
{
 struct utmp *n;
 char *a;
 int i;
 setutent();
 n=getutent();
 while(n!=NULL)
 {
  if(n->ut_type==7)
  {
   printf("%-9s",n->ut_user);
   printf("%-12s",n->ut_line);
   a=ctime(&n->ut_time);
   printf(" ");
   for(i=4;i<16;i++)
   printf("%c",a[i]);
   printf(" (");
   printf("%s",n->ut_host);
   printf(")
");
  }
  n=getutent();
 }
}

What is important is to keep learning, to enjoy challenge, and to tolerate ambiguity. In the end there
are no certain answers.

Martina Horner

Change will not come if we wait for some other person or if we wait for some time. We are the ones we've been waiting for.

Barack Obama

To learn something new, you need
to try new things and not be afraid to be wrong.

Roy T. Bennett

If people like you they'll listen to you but if they trust you they'll do business with you.

Zig Ziglar

If you want to achieve greatness, stop asking for permission.

Anonymous

Set a goal so big that you can not achieve it until you grow into the person who can.

Zig Ziglar

The competitor to be feared is one who never bothers about you at all, but goes on making his own business better all the time.

Henry Ford

Decide carefully, exactly what you want in life, then work like mad to make sure you get it!

Hector Crawford