As a newcomer to perl, I'm trying to figure out the best way of doing the following.
I have an error log file . Here's a sample 
00:00000:00014:2005/11/30 10:01:23.77 server  Configuration file '/opt
+/sybase/SERVER1.cfg' has been
written and the previous version has been renamed to '/opt/sybase/SERV
+ER1.030'.
00:00000:00014:2005/11/30 10:01:23.80 server  The configuration option
+ 'log audit logon success' has been ch
anged by 'sa' from '0' to '1'.
00:00000:00015:2005/11/30 10:01:37.36 Logon  Login succeeded. User: sa
+, Client IP address: '169.123.26.124'.
00:00000:00016:2005/11/30 10:10:50.91 Logon  Login succeeded. User: xy
+z, Client IP address: '169.123.26.124'.
00:00000:00017:2005/11/30 16:31:31.02 Logon  Login succeeded. User: sa
+, Client IP address: '169.123.26.124'.
00:00000:00020:2005/11/30 16:51:11.90 Logon  Login succeeded. User: sa
+, Client IP address: '169.123.26.124'.
00:00000:00021:2005/12/01 09:49:23.44 Logon  Login succeeded. User: ab
+c, Client IP address: '169.123.26.124'.
00:00000:00022:2005/12/01 09:49:23.90 Logon  Login succeeded. User: sa
+, Client IP address: '169.123.26.124'.
00:00000:00023:2005/12/01 09:51:29.65 kernel  Cannot read, host proces
+s disconnected: SERVER1  spid: 23
00:00000:00025:2005/12/01 09:52:27.74 Logon  Login succeeded. User: sa
+, Client IP address: '169.123.26.124'.
00:00000:00026:2005/12/01 09:55:24.06 Logon  Login succeeded. User: qw
+r, Client IP address: '169.123.26.124'.
00:00000:00027:2005/12/01 09:55:47.15 Logon  Login succeeded. User: sa
+, Client IP address: '169.123.26.124'.
00:00000:00026:2005/12/01 10:02:25.95 server  Configuration file '/opt
+/sybase/SERVER1.cfg' has been
written and the previous version has been renamed to '/opt/sybase/SERV
+ER1.031'.

[download]
I need to be able to extract the records which have "Login succeeded" but specifically only the user name from that record. e.g. sa, xyz, abc,qwr

I actually just need one occurence of each different user that has successfully logged in. So in the above snippet sa has logged in several times but all I need to know is that they have logged in at least once
I started off by doing this 

use strict;
my $line;
my @array;

# Open the errorlog file
open(errlog,"/opt/sybase/logs/errorlog_SERVER1") or die "Can't open er
+rorlog file!";

# Open th eoutput file
open(loginf,">/tmp/login.dat");

while ($line = <errlog>) {
chomp $line;
next unless ($line =~ /Login succeeded/);
push @array, $line;
}

foreach (@array) {
   print "$array[7]\n";
}

close errlog;
close loginf;

[download]
This just prints the whole line out. I was under the impression that the array is naturally split by a space ?
Anyhow , how do I get just one distinct occurence of each user into another file ?
Thanks

In reply to array processing by Anonymous Monk

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