Tar relates to a file format widely used in UNIX environments, identified with the extent of tar. It also refers to the program for managing files that are standard in these environments. The format was designed to store files in a convenient form on magnetic tape and then comes its name, which stands for "tape archive". Due to this origin the format is ready to be processed linearly, without a way to remove a member without traversing the entire file to find it. Initially developed to write data to I / S sequential devices for purposes of backup tape, tar is used today to collect many files into one larger for distribution or archive file, while preserving the information system files, such as user permissions and group dates, and directory structures.
.ZIP is an archive file format that supports lossless data compression. A .ZIP file may contain one or more files or folders that may have been compressed. The .ZIP file format permits a number of compression algorithms. The format was originally created in 1989 by Phil Katz, and was first implemented in PKWARE, Inc.'s PKZIP utility, as a replacement for the previous ARC compression format by Thom Henderson. The .ZIP format is now supported by many software utilities other than PKZIP. Microsoft has included built-in .ZIP support (under the name "compressed folders") in versions of Microsoft Windows since 1998. Apple has included built-in .ZIP support in Mac OS X 10.3 (via BOMArchiveHelper, now Archive Utility) and later. Most free operating systems have built in support for .ZIP in similar manners to Windows and Mac OS X.