06-28-2007
another perl question
I copy and paste from the book but this thing is not working.
I cannot figure out what is wrong with myline 9.. can someone please tell me
[root@localhost perl]# cat ./sort4.pl
#!/usr/bin/perl -w
use strict;
use warnings;
my $input = shift;
my $output = shift;
open(IN, '<', $input) or die "Can't read source file $input: $!\n";
open(OUT, '>', $output) or die "CAn't write to file $output: $!\n";
my @file = <IN>;
@file = sort @file;
print OUT @file;
close IN;
close OUT;
[root@localhost perl]# perl -c sort4.pl
sort4.pl syntax OK
[root@localhost perl]# perl sort4.pl
Use of uninitialized value in open at sort4.pl line 9.
Use of uninitialized value in concatenation (.) or string at sort4.pl line 9.
Can't read source file : No such file or directory
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LEARN ABOUT DEBIAN
apache2::sitecontrol::rule
Apache2::SiteControl::Rule(3pm) User Contributed Perl Documentation Apache2::SiteControl::Rule(3pm)
NAME
Apache2::SiteControl::Rule - Permission manager access rule.
DESCRIPTION
Each rule is a custom-written class that implements some aspect of your site's access logic. Rules can choose to grant or deny a request.
package sample::Test;
use strict;
use warnings;
use Carp;
use Apache2::SiteControl::Rule;
use base qw(Apache2::SiteControl::Rule);
sub grants($$$$)
{
my $this = shift;
my $user = shift;
my $action = shift;
my $resource = shift;
if($action eq "edit" && $resource->isa("sample::Record")) {
return 1 if($user{name} eq "root");
}
return 0;
}
sub denies($$$$)
{
return 0;
}
1;
The PermissionManager will only give permission if at least one rule grants permission, and no rule denies it.
It is important that your rules never grant or deny a request they do not understand, so it is a good idea to use type checking to prevent
strangeness. Assertions should not be used if you expect different rules to accept different resource types or user types, since each rule
is used on every access request.
EXPORT
None by default.
SEE ALSO
Apache2::SiteControl::UserFactory, Apache::SiteControl::ManagerFactory, Apache2::SiteControl::PermissionManager, Apache::SiteControl
AUTHOR
This module was written by Tony Kay, <tkay@uoregon.edu>.
COPYRIGHT AND LICENSE
perl v5.14.2 2006-03-17 Apache2::SiteControl::Rule(3pm)