🚀 go-pugleaf

Bash version 1.03, on an HP300 running More/BSD, GCC-compiled.

Have you looked at my (cat /etc/passwd) | cat bug at all?

It seems to me that this problem is related to the shell's decision to
put each side of the pipe in (foo)|(bar) into a separate job:

bash-1.03$ (sleep 100) | (sleep 200)
^Z
[1]+  Stopped             ( sleep 100 )
^Z
[2]+  Stopped             ( sleep 200 )
bash-1.03$ jobs
[1]-  Stopped             ( sleep 100 )
[2]+  Stopped             ( sleep 200 )
bash-1.03$ 

Furthermore, the subshells get stopped, but the commands in them do not:
bash-1.03$ jobs
[1]-  Stopped             ( sleep 100 )
[2]+  Stopped             ( sleep 200 )
bash-1.03$ ps
  PID TT STAT  TIME COMMAND
 1932 p0 I     0:04 bash       <- my parent shell (still 1.02!)
 3003 p0 S     0:03 bash-1.03  <- the shell with the 'bash-1.03$ ' prompt
 3014 p0 T     0:00 bash-1.03  }
 3015 p0 S     0:00 sleep 100  } the subshells and the commands
 3016 p0 T     0:00 bash-1.03  }
 3017 p0 S     0:00 sleep 200  }
 3020 p0 R     0:00 ps
bash-1.03$ 

(the STAT column of our ps has T=stopped, S=short-term sleep,
 I=long-term sleep, R=run).

I don't know who defines what a job really is (Posix?), but this does
not appear to be the way ksh does it, and is certainly not the way csh
does it.  Is it a bug or a feature?

(ksh version ??? on an HP300 running HPUX6.5):
ksh$ (sleep 100)|(sleep 200)
[1] + Stopped                  (sleep 100)|(sleep 200)
ksh$ jobs
[1] + Stopped                  (sleep 100)|(sleep 200)
ksh$ 

(csh version ??? on an HP300 running More/BSD):
csh% (sleep 100)|(sleep 200)
^Z
Stopped
csh% jobs
[1]  + Stopped              ( sleep 100 ) | ( sleep 200 )
csh% ps
  PID TT STAT  TIME COMMAND
 1932 p0 IW    0:06 bash
 3085 p0 S     0:00 -sh (csh)
 3096 p0 T     0:00 sleep 100
 3097 p0 T     0:00 sleep 200
 3098 p0 R     0:00 ps
csh% kill 3096
csh% jobs
[1]  + Terminated           ( sleep 100 ) |
       Stopped              ( sleep 200 )
csh% 

-rgn
--
Ray Nickson, Dept. Comp. Sci., Victoria University of Wellington, New Zealand.
nickson@comp.vuw.ac.nz       ...!uunet!vuwcomp!nickson      + 64 4 721000x8593