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Here's an simple question: what year did the Unix "tar" (TApe ARchive) come out? I wasn't able to find the answer with Internet searches.

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migrated from stackoverflow.com Mar 10 '13 at 1:34

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4 Answers

up vote 9 down vote accepted

First Edition UNIX included a tape backup program called "tap". Since it was designed around the capabilities of the First Edition filesystem, it did not have a concept of "group" (First Edition only had "user" and "other" permission bits) and used a 16-bit time format. Fourth Edition UNIX extended the file system capabilities and replaced "tap" with a new "tp" program for creating and reading tape backups. Similarly, when Seventh Edition UNIX was released in January 1979, it featured a new set of file system features and a new tape backup program called "tar" (for "Tape ARchiver").

So, 1979 it is.

Source : https://github.com/libarchive/libarchive/wiki/FormatTar

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Great job, RBK!! –  Dave Brunker Mar 8 '13 at 21:22
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tar wasn't in v6, but was in v7, if that helps.

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You're absolutely correct! –  Dave Brunker Mar 8 '13 at 21:23
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GNU tar is the default on most GNU/Linux distributions. It is based on the public domain implementation pdtar which started in 1987.

From Wiki.

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The format was created in the early days of Unix and standardized by POSIX.1-1988

1988

http://en.wikipedia.org/wiki/Tape_archive

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