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  2. Perl module - Wikipedia

    en.wikipedia.org/wiki/Perl_module

    #!/usr/bin/perl # Loads the module and imports any functions into our namespace # (defaults to "main") exported by the module. Hello::World exports # hello() by default. Exports can usually be controlled by the caller. use Hello::World; print hello (); # prints "Hello, world!\n" print hello ("Milky Way"); # prints "Hello, Milky Way!\n"

  3. Outline of Perl - Wikipedia

    en.wikipedia.org/wiki/Outline_of_Perl

    #!usr/bin/perl – called the "shebang line", after the hash symbol (#) and ! (bang) at the beginning of the line. It is also known as the interpreter directive. # – the number sign, also called the hash symbol. In Perl, the # indicates the start of a comment. It instructs perl to ignore the rest of the line and not execute it as script code.

  4. Perl control structures - Wikipedia

    en.wikipedia.org/wiki/Perl_control_structures

    Perl provides three loop control keywords that all accept an optional loop label as an argument. If no label is specified, the keywords act on the innermost loop. Within nested loops, the use of labels enables control to move from an inner loop to an outer one, or out of the outer loop altogether.

  5. Perl language structure - Wikipedia

    en.wikipedia.org/wiki/Perl_language_structure

    #!/usr/bin/perl print "Hello, World!\n"; The hash mark character introduces a comment in Perl, which runs up to the end of the line of code and is ignored by the compiler (except on Windows). The comment used here is of a special kind: it’s called the shebang line.

  6. Taint checking - Wikipedia

    en.wikipedia.org/wiki/Taint_checking

    The concept behind taint checking is that any variable that can be modified by an outside user (for example a variable set by a field in a web form) poses a potential security risk. If that variable is used in an expression that sets a second variable, that second variable is now also suspicious. The taint checking tool can then proceed ...

  7. Perl Programming Documentation - Wikipedia

    en.wikipedia.org/wiki/Perl_Programming_Documentation

    Perl Programming Documentation, also called perldoc, is the name of the user manual for the Perl 5 programming language. It is available in several different formats, including online in HTML and PDF. The documentation is bundled with Perl in its own format, known as Plain Old Documentation (pod).

  8. CGI.pm - Wikipedia

    en.wikipedia.org/wiki/CGI.pm

    CGI.pm was a core Perl module but has been removed as of v5.22 of Perl. [1] The module was written by Lincoln Stein and is now maintained by Lee Johnson. Examples

  9. Perl virtual machine - Wikipedia

    en.wikipedia.org/wiki/Perl_virtual_machine

    The Perl virtual machine is a stack-based process virtual machine implemented as an opcodes interpreter which runs previously compiled programs written in the Perl language. The opcodes interpreter is a part of the Perl interpreter, which also contains a compiler (lexer, parser and optimizer) in one executable file, commonly /usr/bin/perl on various Unix-like systems or perl.exe on Microsoft ...