begin quoting Tracy R Reed as of Sat, Oct 01, 2005 at 10:17:39PM -0700:
> Todd Walton wrote:
[snip]
> > 5) Does 'tee' have a use?
>
> I've never used it myself but it seems to be taught in every basic unix
> class.
It comes in to play when you want to capture the output of a pipe-sequence
part-way through.
% ls | tee /tmp/data1 | grep -v squeak | tee /tmp/data2 | grep -v tar >
/tmp/data3
% wc -l /tmp/data*
32 /tmp/data1
30 /tmp/data2
29 /tmp/data3
91 total
%
One way to use tee is to redirect data into a file *and* watch it as well;
instead of
% mycommand > filename & tail -f filename
You can use tee:
% mycommand | tee filename
-Stewar "Should do more with pipes" Stremler
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