Description : program to implementing who command using system calls

Warning: main(topsc.html) [function.main]: failed to open stream: No such file or directory in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 13

Warning: main(topsc.html) [function.main]: failed to open stream: No such file or directory in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 13

Warning: main() [function.include]: Failed opening 'topsc.html' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 13

Warning: main(leftsc.html) [function.main]: failed to open stream: No such file or directory in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 16

Warning: main(leftsc.html) [function.main]: failed to open stream: No such file or directory in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 16

Warning: main() [function.include]: Failed opening 'leftsc.html' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 16

Displaying Source Code(s)

Warning: main(adsc.html) [function.main]: failed to open stream: No such file or directory in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 31

Warning: main(adsc.html) [function.main]: failed to open stream: No such file or directory in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 31

Warning: main() [function.include]: Failed opening 'adsc.html' for inclusion (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/eng123/public_html/sourcecode/c/unix/who_command.html on line 31

Description : program to implementing who command using system calls

#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(")<BR>);
}
n=getutent();
}
}