C Programming Code Examples C > C on Unix Code Examples 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(); } }
