Convert PDF to 9 (Man Page)

The Portable Document Format (PDF) is a file extension created by Adobe Systems in 1993 to facilitate document exchange across different systems. PDFs preserve the formatting of source documents, making them ideal for sharing text, images, and graphics in a consistent manner. Commonly used for forms, manuals, e-books, and reports, PDF files are platform-independent, ensuring the content appears the same on various devices and operating systems. This versatility has solidified its status as a standard in digital documentation, enhancing both compatibility and security in file sharing.

The 9 file extension refers to Section 9 of the Unix manual pages, specifically covering Kernel Routines. These manual pages provide detailed information on kernel APIs, internal structures, and other essential aspects of kernel development. Developed by Dennis Ritchie and Ken Thompson at AT&T Bell Laboratories in 1971, Section 9 is crucial for kernel developers but is not universally available due to its specialized nature.