Re: 'watching' a file

["C.J.LAWSON" <C.J.Lawson@cranfield.ac.uk>]

Off the top .... try piping it through either ( less -o more -o most )
and doing a /what_I_want to find what you are looking for ... I hope it
works ... 

	J.

On Wed, 4 Mar 1998, Paul Miller wrote:

> On 4 Mar 1998, Ben Pfaff wrote:
> 
> >    How can you 'watch' a file as it is being written to?  For example, I want
> >    to have a script watch a log files for certain information and do
> >    something when it sees the information.
> > 
> > Depending on exactly what you mean, `tail -f' might be helpful.
> > 
> 
> hmmm.. if 'tail -f filename' continuously outputs using stdout, how could
> I stop it when the text I'm looking for appears?  I want tail to terminate
> when it receives the following information: 
> 
> 	caller=##########, conn='', name='username'
> 
> ..and put those strings in variables for another program to use.
> 
> tail -f /var/log/mgetty/mg_ttyS1.log | (
> 
> ???
> 
> )
> 
> 
> Thanks
> -Paul
> 
> 
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