UNIX for Dummies Questions & Answers

i log in as root and is in pts/11 , do a who -uH, got the below

root pts/11 Dec 11 08:01 0:10 11588
root pts/12 Dec 11 09:09 0:03 12001

now do a ps -ef | grep pts/12, get the below

root 12133 12107 0 09:18:22 pts/13 0:00 vi myoracle
root 12107 12105 0 09:14:48 pts/13 0:00 -csh

1) so now i am in pts/11, but i want to kill the process at pts/12 which is "vi myoracle". How?

2) are pts/11, pts/12 called as terminals?

root 12133 12107 0 09:18:22 pts/13 0:00 vi myoracle
root 12107 12105 0 09:14:48 pts/13 0:00 -csh

You would kill the 12133 process - best to get back to that session and quit from the editor, but you could kill it. Read the man page on kill. I am hoping that the 'pts/13' was just a typo.

thanks RTM.. the corrected version is as belows

i log in as root and is in pts/11 , do a who -uH, got the below

root pts/11 Dec 11 08:01 0:10 11588
root pts/12 Dec 11 09:09 0:03 12001

now do a ps -ef | grep pts/12, get the below

**** CHANGED THE BELOW TWO LINES ****
root 12133 12107 0 09:18:22 pts/12 0:00 vi myoracle
root 12107 12105 0 09:14:48 pts/12 0:00 -csh

1) so now i am in pts/11, but i want to kill the process at pts/12 which is "vi myoracle". How?

2) are pts/11, pts/12 called as terminals?

3) rtm, I wanted to get back to that session but it gets hanged... and therefore the though of killing it from other pts...

4) will take a man look and hopefully will provide a answer.

1) You can use kill -9 12133 -- if that process is the one that causes the session to hang. Hopefully you should get back your prompt.

2) are pts/11, pts/12 called as terminals? NO

pts -- STREAMS slave pty (psuedo-terminal) driver

A psuedo-terminal (pty) consists of a tighly-coupled pair of character devices, called the master device and slave device.
The pty master and slave device drivers work together to simulate a terminal connection where the master provides a connection to the pseudo terminal server process and the slave provides a terminal device special file access for the terminal application processes, as depicted below:

Application Processes <--> pty functions <--> Server Process

-----------------
pty functions
-----------------
Slave | Master
(pts) | (ptm)
-----------------

Hope it helps !!

~MK