You need to remember that the CGI script is run with the uid of the apache, not as yourself. You will need to make sure that the cisco log is accessible to the apache user id (normally httpd, apache, etc).
Save the following script to the cgi-bin directory of your webserver as
view_cisco_log.cgi, and modify the path to point to the actual location of the cisco log on your machine.
#!/usr/bin/perl -w
use strict;
use CGI;
use IO::File;
my $f = new IO::File "/opt/cisco/cisco.log", "r" or die;
my $cgi = new CGI;
print $cgi->header, "<HTML><TITLE>CISCO LOG</TITLE><BODY><PRE>";
while (defined (my $line = <$f>)) {
$line =~ s/&/&/g;
$line =~ s/</</g;
$line =~ s/>/>/g;
print $line
}
print "</PRE></BODY></HTML>";
And create a link on your webpage to point to the following location:
http://your.website.com/cgi-bin/view_cisco_log.cgi. So that when a user clicks on the link, he/she will invoke the CGI script and see the cisco log.
