Re: about pipe

[Stephane Chazelas]

On Mon, Feb 21, 2005 at 05:19:22AM -0800, gan_xiao_jun@yahoo.com wrote:
[...]
> while running:
> 
> myapp 2>/dev/null&
> 
> I want to change 2>&1 without stop this job.
> Is there some tips to finish it?
[...]

If you mean that you also want to discard stdout, you can try:

gdb myapp << EOF
attach $!
call dup2(2,1)
detach
EOF

or:

gdb myapp << EOF
set auto-solib-add off
attach $!
share libc\\..*
call dup2(1,2)
detach
EOF

myapp needs to be linked dynamically to the libc and even then,
hat's not guaranteed to work.

-- 
Stéphane