Tailing logs

[Oliver Fromme]

DAve <> wrote:
 > I would love to have a way to tail a log, like piping to grep, except I 
 > see every line and the lines I would normally grep for are highlighted. 
 > That would be cool. Anyone know of a bash command or tool that will do this?
 > 
 > Side note, I am tailing sendmail after changes to my outbound queue 
 > runners. I want to highlight my sm-mta-out lines but still see all lines.

You could use this script:

http://www.secnetix.de/olli/scripts/bold

It's a filter that works like similar to grep, but it
highlights the parts that match your regular expression.
The script contains usage information.

So you can do things like this:

$ tail -f /var/log/maillog | bold -l myhost.mydomain

(The -l option specifies to highlight the whole line,
not just the part that matches.)

Best regards
   Oliver

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