cpio
What is a .cpio file?
application/x-cpio
cpio (.cpio) is a classic Unix archive format that concatenates files with per-file headers, used by initramfs images and RPM payloads. The 'newc' (SVR4) variant is the modern portable form.
How to use a .cpio file
Use an example .cpio archive to test cpio extractors, initramfs tooling, and newc-format parsers.
Download example .cpio files
- CPIO Archive (newc/SVR4)A cpio archive in the newc (SVR4) format with four members: the Unix archive format used by initramfs and RPM. Hand-written to spec and documented down to its member list; for testing cpio extractors and converters.
- CPIO - Empty Archive (trailer only)An empty cpio archive is a single TRAILER!!! header record - a full 110-byte newc header with every numeric field zero - plus its alignment padding. Readers that look for member data before checking the name find none and must still report a valid, empty archive.