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More recently, as the phenomenon has become well-known, the phrase is sometimes used in ordinary examples (without obfuscation). The idea of using tiny Perl programs that print a signature as a signature was originated by Randal L. Schwartz, in his postings to the newsgroup comp.lang.perl. [1] He wrote many of the JAPHs which are shown below.
This includes Perl itself, nearly all publicly released modules, many scripts, most design documents, many articles on Perl.com and other Perl-related web sites, and the Parrot virtual machine. Pod is rarely read in the raw, although it is designed to be readable without the assistance of a formatting tool.
In the above example, the find utility feeds the input of xargs with a long list of file names. xargs then splits this list into sublists and calls rm once for every sublist. Some implementations of xargs can also be used to parallelize operations with the -P maxprocs argument to specify how many parallel processes should be used to execute the ...
Slowloris is a type of denial of service attack tool which allows a single machine to take down another machine's web server with minimal bandwidth and side effects on unrelated services and ports.
At this point Perl can call Demo::XSModule::concat('foo', 'bar') and receive back a string foobar, as if concat() were itself written in Perl. Note that, for building Perl interfaces to preexisting C libraries, the h2xs [ further explanation needed ] can automate much of the creation of the XS file itself.
Port knocking is a flexible, customisable system add-in. If the administrator chooses to link a knock sequence to an activity such as running a shell script, other changes such as implementing additional firewall rules to open ports for specific IP addresses can easily be incorporated into the script. Simultaneous sessions are easily accommodated.
mod_perl is an optional module for the Apache HTTP server.It embeds a Perl interpreter into the Apache server. In addition to allowing Apache modules to be written in the Perl programming language, it allows the Apache web server to be dynamically configured by Perl programs.
Expect is an extension to the Tcl scripting language written by Don Libes. [2] The program automates interactions with programs that expose a text terminal interface. Expect, originally written in 1990 for the Unix platform, has since become available for Microsoft Windows and other systems.