how to kill the tty in unix

Question

This is the result of the finger command (Today(Monday) when I (Vidya) logged in)

sekic1083 [6:14am] [/home/vidya] -> finger
Name        Tty          


        

Answer 1

In addition to AIXroot's answer, there is also a logout function that can be used to write a utmp logout record. So if you don't have any processes for user xxxx, but userdel says "userdel: account xxxx is currently in use", you can add a logout record manually. Create a file logout.c like this:

#include 
#include 

int main(int argc, char *argv[])
{
  if (argc == 2) {
    return logout(argv[1]);
  }
  else {
    fprintf(stderr, "Usage: logout device\n");
    return 1;
  }
}

Compile it:

gcc -lutil -o logout logout.c

And then run it for whatever it says in the output of finger's "On since" line(s) as a parameter:

# finger xxxx
Login: xxxx                             Name:
Directory: /home/xxxx                   Shell: /bin/bash
On since Sun Feb 26 11:06 (GMT) on 127.0.0.1:6 (messages off) from 127.0.0.1
On since Fri Feb 24 16:53 (GMT) on pts/6, idle 3 days 17:16, from 127.0.0.1
Last login Mon Feb 10 14:45 (GMT) on pts/11 from somehost.example.com
Mail last read Sun Feb 27 08:44 2014 (GMT)
No Plan.

# userdel xxxx
userdel: account `xxxx' is currently in use.
# ./logout 127.0.0.1:6
# ./logout pts/6
# userdel xxxx
no crontab for xxxx