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perl matching syntax with mail filter


perl matching syntax with mail filter

By : user2955381
Date : November 22 2020, 10:40 AM
it should still fix some issue We have a part of a mail filter that denies emailing system accounts for security purposes. We recently had a user created that ends in "bin". The bin user is restricted, but the user, lets say l.parrbin, gets flagged via the syntax below: , Try doing this :
code :
if ($recip =~ /^$acct\@/i){
#              ^


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Filter all mail generated by a Perl script

Filter all mail generated by a Perl script


By : Joseteruel
Date : March 29 2020, 07:55 AM
this will help You are securing the wrong point. Oh, and your php solution won't work for even all the common places anyway.
You can send mail by (at least):
perl - filter hash by keys matching regex without smartmatch

perl - filter hash by keys matching regex without smartmatch


By : Hidden Skills
Date : March 29 2020, 07:55 AM
To fix this issue Your delete isn't quite right because you're using the notation to access a single key, therefore the grep is run in scalar context. Which means that ultimately you're trying to do something like delete $hashref->{'3'} if there are three keys not matching your regex.
If you change your last line to this it should work:
code :
delete @{$hashref}{grep /$regex/, keys %$hashref };
delete $hashref->{$_} for grep /$regex/, keys %$hashref;
perl syntax for matching strings from a file

perl syntax for matching strings from a file


By : yoad hordan
Date : March 29 2020, 07:55 AM
wish of those help I have been struggling with perl syntax. I am trying to learn enough to do a large conditional replacement on the source code of another project but keep running into trouble. I wrote a simple script to test my problems and this and it worked fine. I tried it on a file and it no longer worked. The file contains the same text as my test string.
code :
$subject_content =~ s/$matching/$replacement/ee;
$subject_content =~ "s/$matching/$replacement/ee";
From grep Perl style regex syntax to actual Perl regex pattern matching

From grep Perl style regex syntax to actual Perl regex pattern matching


By : Marimba
Date : March 29 2020, 07:55 AM
like below fixes the issue The match operator in list context returns the captured texts if there are any, so all you need to do is add a capture (parens) around the bit you want returned.
code :
my ($blocks) = $string =~ /(?<=blocks=)([^$]*)/;
print "$blocks\n";
my ($blocks) = $string =~ /blocks=([^$]*)/;
print "$blocks\n";
if ( my ($blocks) = $string =~ /blocks=([^$]+)/ ) {
    print "$blocks\n";
}
if ( my ($blocks) = $string =~ /blocks=([^\n]+)/ ) {
    print "$blocks\n";
}
if ( my ($blocks) = $string =~ /blocks=(.+)/ ) {
    print "$blocks\n";
}
if ( my ($blocks) = $string =~ /blocks=(\S+)/ ) {
    print "$blocks\n";
}
for my $blocks ( $string =~ /blocks=(\S+)/g ) {
    print "$blocks\n";
}
Correct syntax for multiline search and replace in perl so non-matching lines aren't printed

Correct syntax for multiline search and replace in perl so non-matching lines aren't printed


By : manish garg
Date : March 29 2020, 07:55 AM
may help you . Ok, so what you need to know is this:
-0 sets the record separator. You probably don't want to do this.
code :
#!/usr/bin/env perl
use strict;
use warnings; 

local $/ = '--'; 
while ( <DATA> ) {
   print $1,"\n" if m/ (\d\d:\d\d:\d\d)/;
}

__DATA__
--------------------
2016-05-13 10:00:00 abc
2016-05-13 10:00:01 def
2016-05-13 10:00:02 ghi
--------------------
2016-05-13 10:00:03 jkl
2016-05-13 10:00:04 mno
perl -ne 'BEGIN { $/ = "--" } print $1,"\n" if m/ (\d\d:\d\d:\d\d)/'
#!/usr/bin/env perl
use strict;
use warnings; 

local $/ = '--'; 
while ( <DATA> ) {
   my @matches = m/ (\d\d:\d\d:\d\d)/g ;
   print $matches[-1],"\n" if @matches;
}

__DATA__
--------------------
2016-05-13 10:00:00 abc
2016-05-13 10:00:01 def
2016-05-13 10:00:02 ghi
--------------------
2016-05-13 10:00:03 jkl
2016-05-13 10:00:04 mno
$VAR1 = [
          '10:00:00',
          '10:00:01',
          '10:00:02'
        ];
$VAR1 = [
          '10:00:03',
          '10:00:04'
        ];
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