* probable problem with redirections and screen
@ 1999-04-14 11:35 Vincent Lefevre
0 siblings, 0 replies; only message in thread
From: Vincent Lefevre @ 1999-04-14 11:35 UTC (permalink / raw)
To: zsh-users
I start a perl script, say my_script, with the following command line:
nice -2 zsh -c "./my_script 2>&1 2> secstep.out"
to redirect the error output to both the terminal and secstep.out.
When I did this in an rxvt, there was no problem. Now, I start the
script from screen, and sometimes the script dies silently. In the
terminal, I only have the normal output (to stdout) of the script
and the following line:
nice -2 zsh -c 942.81s user 10.38s system 2% cpu 10:30:06.84 total
but no error message, and no non-zero exit status (when I type
"nice -2 zsh -c false", "zsh: exit 1 nice -2 zsh -c false"
is displayed; with my script, there's nothing). So, I don't think
this comes from Perl. Perhaps zsh (the one that starts my_script)
dies before my_script?
The file secstep.out is generally empty. I think the problem occurs
when the script wants to write something to stderr (but sometimes,
writing to stderr doesn't kill the process).
Is there anything I shouldn't do concerning MULTIOS redirections
when I use screen? Or is there a bug in zsh (I use zsh 3.1.5)?
TIA for any information,
--
Vincent Lefevre <Vincent.Lefevre@ens-lyon.fr> - PhD stud. in Computer Science
Web: <http://www.vinc17.org/> or <http://www.ens-lyon.fr/~vlefevre/> - 100%
validated HTML - Acorn Risc PC, Yellow Pig 17, Championnat International des
Jeux Mathematiques et Logiques, TETRHEX, Faits divers insolites, etc.
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