MLUG: RE: [MLUG] tail command & scripting
RE: [MLUG] tail command & scripting
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Is follow used to check changes since the last time you tailed it?
I tried it out, and it seemed to display a running log until I ctrl+c'd it.

I guess you could do "tail error_log -n 1 -f" in one shell window and watch
the errors stack up.  I do this with ultraedit on my winbox, it asks to
refresh the file when I go back to look at my code, updating the display of
errors.  Of course, this only works because the server is indigo_perl and
running on the winbox.

<tfm>
  -f, --follow[={name|descriptor}] output appended data as the file grows;
                             -f, --follow, and --follow=descriptor are
                             equivalent
  -n, --lines=N            output the last N lines, instead of the last 10
      --max-unchanged-stats=N
                           with --follow=name, reopen a FILE which has not
                             changed size after N (default 5) iterations
                             to see if it has been unlinked or renamed
                             (this is the usual case of rotated log files)
</tfm>

> -----Original Message-----
> From: Mark Rages [mailto:EMAIL:PROTECTED]
> Sent: Wednesday, September 04, 2002 2:59 PM
> To: EMAIL:PROTECTED
> Subject: Re: [MLUG] tail command & scripting
> 
> 
> On Wed, Sep 04, 2002 at 02:54:58PM -0500, Ross, Matt wrote:
> > I'm sure many are familiar with this command, but being 
> still a newbie in
> > many areas, I just found out about it today.  With its 
> obvious use in
> > reading error logs, I find it hard to believe I haven't 
> seen it in manuals
> > or scripting guides before.  If you are like me, and 
> haven't found out about
> > this command, it reads the last 10 lines of a file and 
> outputs them for you.
> > You can -n a different range if you need more (or less?) of 
> the file also,
> > making this ideal for debugging.  Before I had been 
> grep'ing what I needed
> > by assumed timestamp or filename.
> > 
> 
> Oh, the most important option for tail is -f (follow).
> 
> Regards,
> Mark
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