current pids per tty

[Matthew Story]

On Tue, Apr 3, 2012 at 12:33 PM, illoai at gmail.com <illoai at gmail.com> wrote:

> On 3 April 2012 04:19, takCoder <tak.official at gmail.com> wrote:
> > Hi Everyone,
> >
> > i'm trying to find out a way to list *all* the pids of which running in
> the
> > background of or as the parent *of the current tty* device my shell file
> is
> > running on.. is there a quick way to find it out as for commands like tty
> > (for current tty) or whoami (for current user) or i should just grep and
> > sed the output of commands like w  or ...?
> >
> > as you may know, W(1)'s output just shows the number of pts devices in
> its
> > tty column.. so it won't be that easy to grep them all(i'm somehow new in
> > shell scripting as well).. and i need the detailed info about related
> > processes; like FROM or WHAT outputs of w command.. (BTW, i'm trying to
> > write a reporting per-tty shell script for my FreeBSD system..)
> >
> > it would be very kind of you giving me any tips or tricks on this.
>
> tcsh & sh both have a builtin called "jobs" (there is an executable
> named /usr/bin/jobs, but . . . well run "cat /usr/bin/jobs" & see for
> yourself).  I dunno if that encompasses everything you want to do.
>

Across all TTYs, something like this would probably work:

sudo fstat | awk '$5 ~ /^\/dev/ && $8 ~ /tty/ { printf "%s %s %s\n", $1,
$8, $3; }' | sort -k1,2

from there, if you think you need to trace the process trees down, you can
use this list of pids and ps to do the rest ...

hopefully that helps



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-- 
regards,
matt