Script started on Tue 12 Dec 2006 10:30:38 AM CST
WUARL: /c/kenw/arl/repository/wu_arl

kenwlap.cse.wustl.edu> alias myps 'ps -o state,pid,ppid,pgrp,tpgid,cmd'	### tcsh format
							### bash:  alias myps="ps ..."

kenwlap.cse.wustl.edu> ./fib -n 600 &	### run fib in the BG
Args:
  maxn = 600

[1] 2427

kenwlap.cse.wustl.edu> myps
S   PID  PPID  PGRP TPGID CMD		### controlling terminal pgrp = 2428; i.e., ps
R  2400  2399  2400  2428 -csh -i
R  2427  2400  2427  2428 ./fib -n 600
R  2428  2400  2428  2428 ps -o state,pid,ppid,pgrp,tpgid,cmd

kenwlap.cse.wustl.edu>
ntimes = 600
tv2.tv_sec = 1165941077, tv2.tv_usec = 233002, tv1.tv_sec = 1165941062, tv1.tv_usec = 1868
Diff = 15 sec, 231134 usec

[1]    Done                          ./fib -n 600

					###
					### the following could also be a script
					###
kenwlap.cse.wustl.edu> sleep 10; myps; sleep 10; myps; sleep 10; myps &
[1] 2429				### run ps probe in BG

kenwlap.cse.wustl.edu> ./fib -n 2000	### run fib in FG
Args:
  maxn = 2000

S   PID  PPID  PGRP TPGID CMD		### 1st probe:  CT pgrp = 2431; same as fib
S  2400  2399  2400  2431 -csh -i
R  2429  2400  2429  2431 -csh -i
R  2431  2400  2431  2431 ./fib -n 2000
R  2432  2429  2429  2431 ps -o state,pid,ppid,pgrp,tpgid,cmd

Suspended				### I enterred ctrl-z

kenwlap.cse.wustl.edu> bg		### put fib in BG
[2]    ./fib -n 2000 &

kenwlap.cse.wustl.edu>
S   PID  PPID  PGRP TPGID CMD		### 2nd probe:  CT pgrp = 2400; same as my shell
S  2400  2399  2400  2400 -csh -i
R  2429  2400  2429  2400 -csh -i
R  2431  2400  2431  2400 ./fib -n 2000
R  2434  2429  2429  2400 ps -o state,pid,ppid,pgrp,tpgid,cmd

fg					### put fib in FG

( sleep 10; ps -o state,pid,ppid,pgrp,tpgid,cmd; sleep 10; ps -o  ...

S   PID  PPID  PGRP TPGID CMD		### 3rd probe:  CT prgrp = 2429; same as ps
S  2400  2399  2400  2429 -csh -i
R  2429  2400  2429  2429 -csh -i
R  2431  2400  2431  2429 ./fib -n 2000
R  2436  2429  2429  2429 ps -o state,pid,ppid,pgrp,tpgid,cmd

kenwlap.cse.wustl.edu> bg

ntimes = 2000
tv2.tv_sec = 1165941172, tv2.tv_usec = 351691, tv1.tv_sec = 1165941117, tv1.tv_usec = 808217
Diff = 54 sec, 543474 usec

[2]    Done                          ./fib -n 2000
kenwlap.cse.wustl.edu> exit

Script done on Tue 12 Dec 2006 10:32:55 AM CST