When I run the following script, I get the following error. Being new to perl, I am having trouble identifying where the error is at. Thanks for your help. Error: Use of uninitialized value at user_access1.pl line 43, <F_ACCESS> chunk 29. Here is the code: #!/usr/bin/perl -w use strict; use constant PATH => "/usr/local/scripts/security/sybase/user/"; use constant GROUPS => "group_files.doc"; use constant ACCESS => "user_access_all.doc"; open F_GROUPS, PATH.GROUPS or die "Can't open: $!"; while (<F_GROUPS>) { chomp(my @field = split /:/); my $field1 = $field[0]; my $field2 = $field[1]; my $field3 = $field[2]; open OUT, ">$field[1]" or die "Can't open: $!"; open F_ACCESS, PATH.ACCESS or die "Can't open: $!"; while (<F_ACCESS>) { chomp (); my $user = $_; if (/$field[0]/) { write OUT;} } close OUT or die "Can't close: $!"; close F_ACCESS or die "Can't close: $!"; #unlink glob "/usr/local/scripts/security/sybase/user/*.txt"; exit; } format OUT_TOP = ||||||||||||||||||||||||||||||||||||||||||||||||||||||||| ||||||||||| Company Name first column second column Third Column _____________________________________________________ .. format OUT = @<<<<<<<<<<<<<< @<<<<<<<<<<<<<< @<<<<<<<<<<<<<< my $field1, my $field2, my $field3 ..Thread Next