“The RAR and 7-Zip file compression formats originated on
Windows, so support for them on Linux is not as automatic as it is
for old Unix holdovers like Gzip and TAR. But with the right
software, you can handle these compressed files without much
trouble.“First, a little background. RAR–short for Roshal Archive–is a
proprietary file compression format developed by Eugene Roshal.
Roshal sells a commercial utility for Windows called WinRAR, but
also offers uncompress-only clients for a number of operating
systems at no charge…”