> I need to find out how many times an IP address appears in a file -
> the
> IP is the first field in the access log string so what would be the
> best
> way to sort this file and count how many times each IP address
> appears ?
I always solve a problem like this with a small Perl script. It can
probably be done in awk as well, but I prefer Perl. Try something
like this:
=============== cut here ===============
#!/usr/bin/perl
use warnings;
use strict;
my $log = shift || "/var/log/httpd/access_log";
my %hash;
open(LOG, $log) || die "Can't open $log for reading ($!)\n";
while(<LOG>)
{
next unless (/(^\d+\.\d+\.\d+\.\d+)/);
$hash{$1}++;
}
close(LOG);
foreach (sort keys %hash)
{
printf "%15s: %d occurances\n", $_, $hash{$_};
}
exit(0);
=============== cut here ===============
The script looks in either the file passed as the first parameter, or
in the absence of that in /var/log/httpd/access_log.
Alfred
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
