[ale] Shell: why?
Zyman, Andy
zymana at hra.nyc.gov
Thu Feb 21 12:49:22 EST 2002
Please disregard this question.
the behavior is different in different grep.
> -----Original Message-----
> From: Zyman, Andy [mailto:zymana at hra.nyc.gov]
> Sent: Thursday, February 21, 2002 12:41 PM
> To: 'ale at ale.org'
> Subject: [ale] Shell: why?
>
>
> Hello,
>
> why i have to use :
>
> tail -f ./*.log | while read LINE ; do
> if ` echo $LINE | cut -f1 -d' ' ` = 'ORA-' ....
>
> but can't use :
>
> tail -f ./*.log | grep ORA-
>
> "I feel stupid .... " :(
>
> I thought that tail would read *.log file and send in to the standard
> output, then grep will "catch" it and perform search. but it
> doesn't work as
> expected.
> Please advise.
>
> Thank You
> Andy
>
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