[Date Prev]   [Date Next] [Thread Prev]   [Thread Next] [Date Index]   [Thread Index]


     Re: [nocol-users] webnocol.cgi

Hi Alan,

tail is a program to visualize the last part of a file. If you want to 
filter the output, you have to use it in this way:

local ($tail) = "/usr/bin/tail /var/log/datalog| /usr/bin/grep 

It has nothing to do with Perl... :-)

By the way: tail produces continous output. If you only want to see 
problems in the past, use cat instead.



>>>>>>>>>>>>>>>>>> Ursprüngliche Nachricht <<<<<<<<<<<<<<<<<<

Am 18.12.98, 08:08:54, schrieb Alan Halachmi <alan@halachmi.net> zum 
Thema [nocol-users] webnocol.cgi:

> Quick question...

>       I'm no PERL wizard, so I'm in need of some help.  I
> added another command to the troubleshooting area of webnocol.
> When I had the webnocol.cgi line read:
> local ($tail) = "tail /var/log/datalog";
> everything worked fine.

> However, when I changed it to:
> local ($tail) = "/usr/bin/grep DEVICE /var/log/datalog | 
> it no longer works.

> I tried:
> local ($tail) = "/usr/bin/grep DEVICE /var/log/datalog"
> but that didn't work either.

> I'd like to be able to take a site, grep it from the datalog file and 
tail the output of the grep, but I'm not having any luck.

> Ideas?

> TIA,
> Alan

> --
> Alan Halachmi
> Wide Area Networks Specialist
> Ingram Entertainment Network Services
> mailto:alan@halachmi.net
> http://www.ingramentertainment.com