zip and unzip
zip is a compression and file-packaging utility that is now available on Solaris. zip is used on Unix, Microsoft Windows, Macintosh, and many other operating systems to compress files and then put those files into an archive file. The zip program is useful for combining a set of files for distribution or for saving disk space by temporarily compressing unused files or directories. You are likely to see Solaris patches distributed in zip format. The section "Installing a Patch" in Chapter 2, "Installing the Solaris 10 Operating Environment," provides information on patches.
You use the unzip command to extract the compressed files from an archive. Other than for installing patches, the zip and unzip commands are not covered on the exam. For more information, consult the online man pages.