Re: 2.4.0 on cygwin - Bad fd number

[Anthony W. Youngman]

In message <address@hidden>, Han-Wen Nienhuys 
<address@hidden> writes
> > Error invoking `latex \\nonstopmode \\input simple.tex 2>&1 1>&
> > /dev/null '. Return value 512Error invoking `dvips  -t a4
> > -u+ec-mftrace.map -u+lilypond.map -Ppdf simple 2>&1 1>& /dev/null '.
> > Return value 512
>
> Ah wait, the shell is struggling with the redirection syntax.
>
> are there any unix gurus that know the correct syntax for redirecting
> all output to /dev/null?

Others have given you the correct syntax - "> /dev/null 2>&1". Apart 
from your extra &, what you've done is redirect stderr to stdout, then 
redirect stdout to /dev/null. And it hasn't worked because stderr and 
stdout (even though they may be pointing at the same place) are *always* 
different pointers. iirc stdin is fp1, stdout is fp2, and stderr is fp3. 
So what you did is copy the contents of fp2 (the terminal) to fp3, 
*then* replaced fp2 with a pointer to /dev/null. Oops. The order in 
which you do things is important (and yes, the reason I know this is 
because it's bitten me, too :-)

Cheers,
Wol
--
Anthony W. Youngman - wol at thewolery dot demon dot co dot uk
HEX wondered how much he should tell the Wizards. He felt it would not be a
good idea to burden them with too much input. Hex always thought of his reports
as Lies-to-People.
The Science of Discworld : (c) Terry Pratchett 1999