error output redirection

[Markiyan Kushnir]

what is easily done with tee for stdout cannot be done for stderr. Looks 
like there is no easy way to make a pipeline using stderr separately 
from stdout. If you want to watch output of the stderr separately from 
stdout, you might manage for it in two consoles:

  % foo 2>err

  % tail -f err

Markiyan.

Nerius Landys wrote:
>> if error output of some program appear on screen,
>> it is possible to print it also to some file simultaneously ?
> 
> Since you said "simultaneously", it made me think of the command tee.  man tee?
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