.bp 
.au "TSC \- intro.xx"

.c
The pt Program

.2
\f(BIpt\fB is an post-processing filter that arranges 
the output from 
\f(BIps\fB so that child processes are indented below
their parents.
.sp .5
.2
It tries to figure out which kind of system you're
running so that it can call 
\f(BIps\fB with the right arguments.
.sp .5
.2
Parsing \f(BIps\fB output is exceedingly difficult, mostly 
because fields can run together.
.sp .5
.2
For our data structure, we'll use an associative array
to represent our process tree.
.sp .5
.2
This program also demos how to get (and how not to get) 
the current window size.
.bp 
.au "TSC \- intro.xx"

.c
Sample pt Output

.b
.sz -5
root       170  co 0:03  xterm -n tom2 -geom 90x24+0+565
.sp .5
tchrist    180  p2 0:04    -tcsh (tcsh)
.sp .5
root     11164  p2 0:03      -csh[] (tcsh)
.sp .5
tchrist  11276  p2 0:00      less pt
.sp .5
tchrist  11280  p2 0:00      /bin/perl /home/tchrist/scripts/pt a
.sp .5
tchrist  11282  p2 0:00        /bin/ps xlwwa
.sp .5
tchrist  11281  p2 0:00      less
.sz +5
.e