The Perl language interpreter.
The perl command is the interpreter for the Perl programming language. It is responsible for parsing and executing Perl scripts.
perl [options] [scriptfile] [arguments]
-w: Enable useful warning messages.
-U: Allow unsafe operations.
-c: Check the syntax of the script without executing it.
-d: Run the script under the Perl debugger.
-e <commandline>: Execute a single line of Perl code from the command line.
File: The Perl script to be executed.