What does Perl do if you try to exploit the execve(2) race involving setuid scripts?

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Sends mail to root and exits.
It has been said that all programs advance to the point of being able to automatically read mail. While not quite at that point (well, without having a module loaded), Perl does at least automatically send it.

2013-09-02, 1717👍, 0💬

How do you print out the next line from a filehandle with all its bytes reversed?
How do you print out the next line from a filehandle with all its bytes reversed? print scalar reverse scalar <FH> Surprisingly enough, you have to put both the reverse and the <FH> into scalar context separately for this to work. 2013-09-04, 1833👍, 0💬

I want users send data by formmail but when they send nothing or call it from web site they will see error ....
I want users send data by formmail but when they send nothing or call it from web site they will see error. codes in PHP like this: if (isset($HTTP_POST_VARS)){ .......... } else{ echo ("error lalalalal") } How it will look in perl? In php it will be like if (isset($HTTP_POST_VARS)){ .... } In perl,... 2013-08-30, 1813👍, 0💬

What does Perl do if you try to exploit the execve(2) race involving setuid scripts?
What does Perl do if you try to exploit the execve(2) race involving setuid scripts? Sends mail to root and exits. It has been said that all programs advance to the point of being able to automatically read mail. While not quite at that point (well, without having a module loaded), Perl does at leas... 2013-09-02, 1718👍, 0💬

What is the output of the following Perl program?
What is the output of the following Perl program? 1 $p1 = "prog1.java"; 2 $p1 =~ s/(.*)\.java/$1.cpp/; 3 print "$p1\n"; prog1.cpp 2013-08-30, 1693👍, 0💬

How do I do < fill-in-the-blank > for each element in a hash?
How do I do < fill-in-the-blank > for each element in a hash? Here's a simple technique to process each element in a hash: #!/usr/bin/perl -w %days = ( 'Sun' =>'Sunday', 'Mon' => 'Monday', 'Tue' => 'Tuesday', 'Wed' => 'Wednesday', 'Thu' => 'Thursday', 'Fri' => 'Friday', 'Sat' => 'Satur... 2013-09-03, 1692👍, 0💬

How to read from a pipeline with Perl
How to read from a pipeline with Perl Example 1: To run the date command from a Perl program, and read the output of the command, all you need are a few lines of code like this: open(DATE, "date|"); $theDate = <DATE>; close(DATE); The open() function runs the external date command, the... 2013-09-05, 1690👍, 0💬

How do I send e-mail from a Perl/CGI program on a Unix system?
How do I send e-mail from a Perl/CGI program on a Unix system? Sending e-mail from a Perl/CGI program on a Unix computer system is usually pretty simple. Most Perl programs directly invoke the Unix sendmail program. We'll go through a quick example here. Assuming that you've already have e-mail info... 2013-09-04, 1678👍, 0💬

How do I sort a hash by the hash key?
How do I sort a hash by the hash key? Suppose we have a class of five students. Their names are kim, al, rocky, chrisy, and jane. Here's a test program that prints the contents of the grades hash, sorted by student name: #!/usr/bin/perl -w %grades = ( kim => 96, al => 63, rocky => 87, chrisy => 96, ... 2013-09-03, 1668👍, 0💬

Assuming $_ contains HTML, which of the following substitutions will remove all tags in it?
Assuming $_ contains HTML, which of the following substitutions will remove all tags in it? 1.s/<.*>//g; 2.s/<.*?>//gs; 3.s/<\/?[A-Z]\w*(?:\s+[ A-Z]\w*(?:\s*=\s*(?:(["']).*?\ 1|[\w-.]+))?)*\s*>//gsi x;You can't do that. If it weren't for HTML comments, imprope... 2013-08-29, 1665👍, 0💬

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