What does the acronym CPIO stand for in context to file archiving?

In the context of file archiving, the acronym CPIO stands for "Copy In, Out". This is a file archiving utility and format used in Unix and Linux systems. The CPIO command allows users to copy files to and from archives, enabling both the creation of new archives and the extraction of files from existing ones. It is often used in conjunction with pipelines and is known for its ability to maintain file permissions and metadata during the archiving process.

The other options do not accurately represent the meaning of CPIO in this context. Therefore, acknowledging the proper definition of CPIO as "Copy In, Out" allows users to accurately utilize this utility for effective file management and archiving. Understanding this term is crucial for those working in Unix/Linux environments dealing with file storage and retrieval processes.