grep | sed do not function inline?
- From: bilbo <bilbo@xxxxxxxxxxxxx>
- Date: Mon, 23 Apr 2007 01:13:57 +0200
Hi all,
Recently I faced a strange behaviour of the Linux commands. I have a
log file which contains a lot of information. I wanted to extract some
informations out of it. But when I tried to
tail -f mylog | grep 'smtg' | sed -n 's/end/notend/p'
no output could be found. Which was quite surprising since the
following tests did their job without any problem:
tail -f mylog | grep 'smtg'
tail -f mylog | sed -n 's/end/notend/p'
tail -200 mylog | grep 'smtg' | sed -n 's/end/notend/p'
So, of course, to achieve this result I simply went for perl. But can
anyone tell me what is the reason why this didn't work?
Thanks,
Tudi.
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