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Newsgroups: linux.dev.kernel,comp.os.linux.development.system,de.comp.os.unix.linux.misc
Subject: HOW2 find Desktop,VT corresponding to pid.
Date: Sun, 24 Apr 2011 11:27:09 +0000 (UTC)
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I need to have a table:
 mapping the (Desktop,VT): pair having mc open, to it's path.
 So: 4,3   /mnt/p6/Debug/dog
means that whe 'data arrives for /mnt/p6/Debug/dog', 
I need to switch to Desktop:4, VT:3.
 
Previously I wrote a utility which gets all mc paths from 
`lsof | grep mc`, with the corresponding pid/S;
and 'examines the graph drawn' by `pstree -p`; and 
from the position of the 'mc branch' in `pstree -p`
could determine the D,V: pair, having the pid corresponding
to the path.  
So via 2 stages, I could map the path to the D,V.

That worked OK for Mandrake 9.
For FC1 it failed, because the 'picture' of `pstree -p`used 
some other char than "-" to draw "-", and different code 
would have been needed. 

Now I've got Slak13, and the `pstree -p`representation
is completely different, so that I can't see the D,V 
corresponding to the pid [so far].
So I couldn't program the system to 'see it'.

OTOH, the system must know 'which file is open
in any D,V'. 
I've browsed around /proc, but I can't see how to solve this.

Since D & V are 'attributes' of the window manager,
probably this is a wm problem.
The method that I eventually got working nicely, was
under KDE3, but now I want to use Xfce.

== TIA.
-> try: lsof | grep <knownPath>
-->  lsof | cut  -c11-14 == shows the list of pid for <knownPath>
-> lsof | grep <thatSame pid>