09-11-2003
I'm lost here, I'm not sure which goofy thing you want to do. If you want to create a session that doesn't show up in who or w, then yes, xterm is an answer. And xterm is a program. You need to run xterm with the -ut option which may be your default. Or you can use +ut to ensure that you do show up in who or w. Fair warning, it is fairly easy to produce a list of such sessions and there is no way to hide your processes from ps.
The idea of this option is that you should have one window that does show up in who/w. That window would be used for talk, etc. But as you open secondary windows, you should inhibit the utmp entry to avoid cluttering up the who/w output.
Leaving a dangling utmp entry is harder, you have to kill the program that would have cleanup it up. That requires root.
Now, how can it be that you saw a pid, but you didn't know the user? Let's try an example... I can get a list of all users on the box who use bash with:
ps -ef | grep " -bash"
One of the lines is
joeblow **** 30014 30013 ** 0 12:27 pts/1 *** **** 00:00:00 -bash
In this case "joeblow" is the user. 30014 is the pid of his shell (pid). 30013 is the pid of the parent of his shell (ppid).
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RESIZE(1) General Commands Manual RESIZE(1)
NAME
resize - set TERMCAP and terminal settings to current xterm window size
SYNOPSIS
resize [ -u | -c ] [ -s [ row col ] ]
DESCRIPTION
Resize prints a shell command for setting the TERM and TERMCAP environment variables to indicate the current size of xterm window from
which the command is run. For this output to take effect, resize must either be evaluated as part of the command line (usually done with a
shell alias or function) or else redirected to a file which can then be read in. From the C shell (usually known as /bin/csh), the follow-
ing alias could be defined in the user's .cshrc:
% alias rs 'set noglob; eval `resize`'
After resizing the window, the user would type:
% rs
Users of versions of the Bourne shell (usually known as /bin/sh) that don't have command functions will need to send the output to a tempo-
rary file and the read it back in with the ``.'' command:
$ resize > /tmp/out
$ . /tmp/out
OPTIONS
The following options may be used with resize:
-u This option indicates that Bourne shell commands should be generated even if the user's current shell isn't /bin/sh.
-c This option indicates that C shell commands should be generated even if the user's current shell isn't /bin/csh.
-s [rows columns]
This option indicates that Sun console escape sequences will be used instead of the special xterm escape code. If rows and columns
are given, resize will ask the xterm to resize itself. However, the window manager may choose to disallow the change.
FILES
/etc/termcap for the base termcap entry to modify.
~/.cshrc user's alias for the command.
SEE ALSO
csh(1), tset(1), xterm(1)
AUTHORS
Mark Vandevoorde (MIT-Athena), Edward Moy (Berkeley)
Copyright (c) 1984, 1985 by X Consortium
See X(1) for a complete copyright notice.
BUGS
The -u or -c must appear to the left of -s if both are specified.
X Version 11 Release 6.3 RESIZE(1)