3.8 | 126 Votes
What is a PL file?
A PL file contains source code written in Perl, a scripting language compiled and run using a Perl interpreter. It contains lines of Perl program code with variables, operations, functions, and comments. PL files may be difficult to read due to the brief and compact nature of the Perl language syntax.
Programmers may use PL scripts for various purposes, including web server CGI scripting, system administration, and app GUI development. The scripting language is also commonly used to read and search through large amounts of text files since it is especially helpful for parsing text.
Programmers typically open and modify PL files with source code editors, such as Microsoft Visual Studio Code and MacroMates TextMate. Plain text editors, including Microsoft Notepad and Apple TextEdit, may also open and modify PL files. However, source code editors provide more helpful viewing and editing features for the Perl scripting language that are not available with plain text editors.
NOTE: PL files typically start with the line #!/usr/local/bin/perl, which tells the computer to run the script using the installed Perl interpreter.
Programs that open or reference PL files
Prolog Source Code File
3.3 | 23 Votes
Contains program source code written in Prolog, a declarative programming language often used for artificial intelligence applications and teaching purposes; can be edited with a text editor and compiled with a Prolog interpreter.
Prolog is an abbreviation for "Programmation en Logique."
Programs that open PL files
Unix Color Plot File
2.6 | 14 Votes
2D or 3D image plot created with BRL-CAD, a combinatorial Constructive Solid Geometry (CSG) solid modeling system; typically generated with MGED (Multi-Device Geometry Editor), included in the BRL-CAD software package.
NOTE: PL files can be converted to standard .PNG image files using BRL-CAD's pl-fb and fb-png commands.